# List of Historic Mechanical Engineering Landmarks

The following is a list of Historic Mechanical Engineering Landmarks as designated by the American Society of Mechanical Engineers (ASME) since it began the program in 1971. The designation is granted to existing artifacts or systems representing significant mechanical engineering technology. Mechanical Engineering Heritage Sites are particular locales at which some event or development occurred or which some machine, building, or complex of significance occupied. Also Mechanical Engineering Heritage Collections refers to a museum or collection that includes related objects of special significance to, but not necessarily a major evolutionary step in, the historical development of mechanical engineering.
Clicking the landmark number in the first column will take you to the ASME page on the site where you will also find the downloadable brochure from the dedication.
There are over 275 landmarks on the list.
| Ref# | Year added | Name | Date | Location | Region/state | Country | Notes |
| 1 | 1973 | Ferries & Cliffhouse Cable Railway Power House One of the most complicated cable-car systems to run from a single station. | 1887 | San Francisco | California | United States | ASME brochure |
| 2 | 1973 | Leavitt-Riedler Pumping Engine Unusual triple-expansion, three-crank "rocker" engine, driving high-capacity, high-speed pumps. | 1894 | Boston | Massachusetts | United States | ASME brochure |
| 3 | 1974 | A.B. Wood Screw Pump The most advanced low-lift drainage pump in use in the early 20th century, later used worldwide. | 1914 | New Orleans | Louisiana | United States | ASME brochure |
| 4 | 1975 | Portsmouth-Kittery Naval Shipbuilding Activity First US naval shipyard, achieving notable firsts in technology and producing many well-known US naval vessels. | 1774 | Kittery | Maine | United States | ASME brochure |
| 5 | 1975 | Boyden Hydraulic Turbines Two of the oldest surviving water turbines, probably the largest and nearly the most powerful ever built in the United States for mechanical drive. Located at Harmony Mills. | 1871 | Cohoes | New York | United States | ASME brochure |
| 6 | 1975 | Curtis 5000-kW Vertical Turbine The most powerful steam turbine-generator in the world at the time of its construction. | 1903 | Schenectady | New York | United States | ASME brochure |
| 7 | 1975 | Saugus Ironworks Reconstruction of the first successful commercial ironworks in North America. | 1647 | Saugus | Massachusetts | United States | ASME brochure |
| 8 | 1975 | Pioneer Oil Refinery California Star Oil Works A replica of the first successful commercial oil refinery in the US West. | 1876 | Newhall | California | United States | ASME brochure |
| 9 | 1975 | Chesapeake & Delaware Canal Scoop Wheel & Engines 19th-century steam pumps at the (former) summit of the ship canal. | 1852 | Chesapeake City | Maryland | United States | ASME brochure |
| 10 | 1975 | USS Texas' Reciprocating Steam Engines Last reciprocating steam engines installed in a naval ship. | 1914 | La Porte | Texas | United States | ASME brochure |
| 11 | 1975 | Paige Compositor First US typography machine to set, justify, and distribute foundry type from a common case using one operator. | 1877 | Hartford | Connecticut | United States | No ASME brochure available. |
| 12 | 1976 | Reynolds-Corliss Pumping Engine Early 20th-century water pump driven by a Corliss steam engine. | 1917 | Jacksonville | Florida | United States | ASME brochure |
| 13 | 1976 | Childs-Irving Hydroelectric Project Early 20th-century hydroelectric plant incorporating innovative technologies. | 1909 | Phoenix | Arizona | United States | ASME brochure |
| 14 | 1976 | Hanford B Reactor First US plutonium production reactor placed in commercial operation. | 1944 | Richland | Washington | United States | ASME brochure |
| 15 | 1976 | Magma Copper Mine Air Conditioning System First air-conditioned mine in North America. | 1937 | Superior | Arizona | United States | ASME brochure |
| 16 | 1976 | Manitou and Pike's Peak Railway Highest railway in the US and highest rack railway in the world. | 1891 | Pikes Peak | Colorado | United States | ASME brochure |
| 17 | 1976 | Edgar Station, Edison Electric Illuminating Co. Power-generation station with one of the world's only high-pressure topping turbines, which set new records in the late 1920s. | 1925 | Weymouth | Massachusetts | United States | ASME brochure |
| 18 | 1976 | Mount Washington Cog Railway World's first cog railway. | 1869 | Mount Washington | New Hampshire | United States | ASME brochure |
| 19 | 1976 | Folsom Power House #1 One of the first successful uses of hydroelectric power in the world, including the first successful long-distance transmission of power. | 1895 | Folsom | California | United States | ASME brochure |
| 20 | 1977 | Crawler Transporters of Launch Complex 39 Two of the largest ground vehicles ever built, including automatic load-leveling systems. | 1965 | Cape Canaveral | Florida | United States | ASME brochure |
| 21 | 1977 | Fairmount Water Works First large-scale application of steam pumping, later water power, to public water supply. | 1815 | Philadelphia | Pennsylvania | United States | ASME brochure |
| 22 | 1977 | USS Olympia, Vertical Reciprocating Steam Engines Two of the first vertical triple-expansion marine engines. | 1892 | Philadelphia | Pennsylvania | United States | ASME brochure |
| 23 | 1977 | Pit-Cast Jib Crane Last US pit-cast jib crane to operate in the casting of iron pipe. | 1905 | Birmingham | Alabama | United States | ASME brochure |
| 24 | 1977 | State Line Generating Unit 1 World's largest electric-power generator for nearly 25 years, achieving many design firsts. | 1929 | Hammond | Indiana | United States | ASME brochure |
| 25 | 1977 | Pratt Institute Power Plant The oldest steam-generating plant of its kind in the Northeastern United States. | 1887 | Brooklyn | New York | United States | ASME brochure |
| 26 | 1977 | Monongahela Incline First US passenger incline. | 1870 | Pittsburgh | Pennsylvania | United States | ASME brochure |
| 27 | 1977 | Duquesne Incline Second US passenger incline. | 1877 | Pittsburgh | Pennsylvania | United States | ASME brochure |
| 28 | 1977 | Great Falls Raceway and Power System First major US water power system and basis for integrating urban planning with industrial development. | 1792 | Paterson | New Jersey | United States | ASME brochure |
| 29 | 1977 | Vulcan Street Power Plant First Edison hydroelectric central station. Coperating landmark by ASME IEEE and ASCE. | 1882 | Appleton | Wisconsin | United States | ASME brochure |
| 30 | 1977 | Wilkinson Mill Early 19th-century textile mill and machine shop. | 1810 | Pawtucket | Rhode Island | United States | ASME brochure |
| 31 | 1978 | Interborough Rapid Transit System (Original Line) The first fully electrically signaled railroad in the United States and the first practical subway in New York City. | 1904 | New York | New York | United States | No ASME brochure available. |
| 32 | 1978 | Baltimore & Ohio Railroad Old Main Line First US railroad in public service. | 1828 | Maryland | Maryland | United States | ASME brochure |
| 33 | 1978 | Ringwood Manor Iron Complex Surviving 18th-century iron manufacturing center. | 1740 | Ringwood | New Jersey | United States | ASME brochure |
| 34 | 1978 | Joshua Hendy Iron Works Early 20th-century ironworks demonstrating the adaptability required for industrial survival. | 1906 | Sunnyvale | California | United States | ASME brochure |
| 35 | 1979 | Hacienda Azucarera la Esperanza Sugar Mill Steam Engine Typical beam steam engine of the mid-19th century, directly connected to sugar crushing rolls. | 1861 | Manatí | Puerto Rico | United States | ASME brochure |
| 36 | 1979 | RL-10 Rocket Engine First rocket engine to use high-energy liquid hydrogen as fuel. | 1958 | West Palm Beach | Florida | United States | ASME brochure |
| 37 | 1979 | A. O. Smith Automatic Frame Plant Prototype of the automated factory; dubbed the 'Mechanical Marvel.' | 1920 | Milwaukee | Wisconsin | United States | No longer exists. ASME brochure |
| 38 | 1979 | Morris Canal (Reaction) Turbine Early reaction, or Scotch, turbine, a type that later found widespread application. | 1850 | Port Warren | New Jersey | United States | Scotch Turbine displayed at Hopatcong State Park. ASME brochure |
| 39 | 1979 | Experimental Breeder Reactor I World's first nuclear power plant to demonstrate the breeder concept. | 1951 | Arco | Idaho | United States | ASME brochure |
| 40 | 1979 | Drake Oil Well First practical oil recovery system using salt-well drilling techniques and modern pipe-driving methods, marks beginning of US petroleum industry. | 1859 | Titusville | Pennsylvania | United States | ASME brochure |
| 41 | 1980 | Springfield Armory First US armory noted for machinery for mass production of small arms, including the Blanchard lathe. | 1794 | Springfield | Massachusetts | United States | ASME brochure |
| 42 | 1980 | East Wells (Onieda) Street Power Plant Pilot plant for US development of pulverized-coal firing in power-plant boilers. | 1918 | Milwaukee | Wisconsin | United States | ASME brochure |
| 43 | 1980 | Watkins Woolen Mill The best preserved 19th-century woolen mill in North America. | 1868 | Lawson | Missouri | United States | ASME brochure |
| 44 | 1980 | Fusion-welded Test Boiler Drum First fusion-welded boiler drum, tests on which led to widespread acceptance in industry. | 1930 | Windsor | Connecticut | United States | ASME brochure |
| 45 | 1980 | Georgetown Steam Plant Steam plant with early Curtis turbines, marking the beginning of the end of the reciprocating steam engine as the central station prime mover. | 1906 | Seattle | Washington | United States | ASME brochure |
| 46 | 1980 | Commonwealth Building Heat Pump First large commercial building in the United States to pioneer the use of heat pumps for heating and cooling. | 1948 | Portland | Oregon | United States | ASME brochure |
| 47 | 1980 | Shippingport Nuclear Power Station First US commercial central electric-generating station to use nuclear energy. | 1958 | Shippingport | Pennsylvania | United States | ASME brochure |
| 48 | 1980 | Edison 'Jumbo' Engine-driver Dynamo One of six dynamos from Edison's Pearl Street Station, the prototype for US central-station power generation. | 1882 | Dearborn | Michigan | United States | ASME brochure |
| 49 | 1980 | Marine-type Triple-expansion, Engine-driven Dynamo Sole surviving engine-generator set marking the beginning of large-scale electric power generation in the United States. | 1891 | Dearborn | Michigan | United States | No ASME brochure available. |
| 50 | 1980 | Cooperative Fuel Research Engine Pioneer variable-compression laboratory engine for testing fuels. | 1928 | Waukesha | Wisconsin | United States | ASME brochure |
| 51 | 1980 | Port Washington Power Plant The world's most thermally efficient steam plant for many years. | 1935 | Port Washington | Wisconsin | United States | ASME brochure |
| 52 | 1980 | Saturn V Rocket (Lyndon B. Johnson Space Center) Three sites (Texas, Florida and Alabama) were simultaneously designated (via satellite) in July 1980. | 1967 | Houston | Texas | United States | ASME brochure |
| 53 | 1980 | Saturn V Rocket (Kennedy Space Center Visitor Complex) Three sites (Texas, Florida and Alabama) were simultaneously designated (via satellite) in July 1980. | 1967 | Cape Canaveral | Florida | United States | ASME brochure |
| 54 | 1980 | Saturn V Dynamic Test Vehicle (U.S. Space & Rocket Center) Three sites (Texas, Florida and Alabama) were simultaneously designated (via satellite) in July 1980. | 1966 | Huntsville | Alabama | United States | ASME brochure |
| 55 | 1980 | Blood Heat Exchanger The first commercial human-blood heat exchanger for controlling hyperthermic temperatures during open-heart surgery. | 1957 | Amherst | New York | United States | ASME brochure |
| 56 | 1980 | Rocky River Pumped-storage Hydroelectric Plant Early example of the pumped-storage principle, at a power plant. | 1929 | New Milford | Connecticut | United States | ASME brochure |
| 57 | 1980 | Kaplan Turbine at York Haven Dam One of the first three Kaplan-type hydraulic turbines in the United States. | 1929 | York County | Pennsylvania | United States | ASME brochure |
| 58 | 1980 | Pioneer Zephyr First US diesel-powered, stainless-steel streamlined train. | 1934 | Chicago | Illinois | United States | ASME brochure |
| 59 | 1981 | Chestnut Street Pumping Engine Typical US municipal steam water-pumping engine of the late 19th century and early 20th century. | 1913 | Erie | Pennsylvania | United States | No ASME brochure available |
| 60 | 1981 | Holt Caterpillar Tractor Earliest track-type gasoline-powered tractor, influencing designs worldwide. | 1918 | Stockton | California | United States | No ASME brochure available |
| 61 | 1981 | Michigan-Lake Superior Power Hydroelectric Plant An early, extremely large-scale, low-head hydropower plant using many small turbines. | 1902 | Sault Ste. Marie | Michigan | United States | ASME brochure |
| 62 | 1981 | Southern Pacific #4294 Cab-in-Front Steam Locomotive Example of the final phase of US steam locomotive development in size and power. | 1944 | Sacramento | California | United States | ASME brochure |
| 63 | 1981 | Jackson Ferry Shot Tower One of the few surviving shot towers for making spherical lead shot. | 1807 | Austinville | Virginia | United States | ASME brochure |
| 64 | 1981 | Graue Mill One of a few survivors of typical US mill machinery with wood as the principal material. | 1852 | Oak Brook | Illinois | United States | ASME brochure |
| 65 | 1981 | Evinrude Outboard Motor Early model of outboard motor for small boats, first commercially successful. | 1909 | Milwaukee | Wisconsin | United States | ASME brochure |
| 66 | 1981 | Mount Wilson Observatory, 100-inch Hooker Telescope Unique telescope mirror support and use of mercury flotation to reduce friction. | 1918 | Los Angeles County | California | United States | ASME brochure |
| 67 | 1981 | Hiwassee Dam Unit 2 Reversible Pump-Turbine The first integrated pump-turbine to be installed in a US power plant and also the largest and most powerful in the mid-20th century. | 1956 | Cherokee County | North Carolina | United States | ASME brochure |
| 68 | 1981 | Edison Experimental Recording Phonograph The world's first practical sound recording machine. | 1877 | West Orange | New Jersey | United States | No ASME brochure available |
| 69 | 1981 | Creusot Steam Hammer The most powerful steam hammer in the world for many years. | 1876 | Le Creusot | Saône-et-Loire | France | ASME brochure |
| 70 | 1981 | Newcomen Engine Direct descendant of Thomas Newcomen's first atmospheric steam engine. | 1712 | Dartmouth | South Devon | United Kingdom | Located at the Dartmouth Museum. ASME brochure |
| 71 | 1981 | ALCOA 50,000-ton Hydraulic Forging Press One of the world's largest fabrication tools, dominant in aircraft and aerospace development. | 1954 | Cleveland | Ohio | United States | ASME brochure |
| 72 | 1981 | Rotating-arm Model-test Facility at Stevens Institute of Technology The world's first model-test facility to conduct maneuverability and control experiments for surface ships, submersibles, and airships. | 1945 | Hoboken | New Jersey | United States | ASME brochure |
| 73 | 1982 | Turbinia The world's first turbine-driven ship. | 1897 | Newcastle upon Tyne | Tyne and Wear | United Kingdom | ASME brochure |
| 74 | 1982 | Anderson-Barngrover Rotary Pressure Sterilizer The world's first continuous-stream automation of the cooking and cooling system for canned food. | 1920 | Santa Clara | California | United States | ASME brochure |
| 75 | 1982 | Alden Research Laboratory Rotating Boom Early 20th-century test facility for current meters, aircraft propellers, ships' logs, pitot tubes, and mine-sweeping paravanes. | 1908 | Holden | Massachusetts | United States | ASME brochure |
| 76 | 1982 | AC Electrification of the New York, New Haven & Hartford Railroad Pioneering venture in mainline railroad electrification. The Cos Cob plant operated until October 1986. | 1907 | Cos Cob | Connecticut | United States | Demolished 2001 and artifacts given to Smithsonian Institution. No ASME brochure available |
| 77 | 1982 | Worthington Horizontal Cross-compound Pumping Corliss-driven pump, typical of early 20th-century US practice. | 1925 | Erie | Pennsylvania | United States | ASME brochure |
| 78 | 1982 | Electro-Motive FT Freight-service Diesel-Electric Locomotive Prototype of the first mass-produced diesel-electric locomotives used for US freight service. Located at National Museum of Transportation as Southern Railway Locomotive #6100. | 1939 | St. Louis | Missouri | United States | ASME brochure |
| 79 | 1982 | Lombard Steam Log Hauler The first practical example of crawler-tread vehicles now used in agricultural, construction, and military equipment. Located at the Lumberman's Museum. | 1910 | Patten | Maine | United States | ASME brochure |
| 80 | 1982 | Aberdeen Range, Aberdeen Proving Ground The world's first large-scale, fully instrumented ballistic range for producing data on aerodynamics. | 1943 | Aberdeen | Maryland | United States | ASME brochure |
| 81 | 1983 | Corning Ribbon Machine Earliest example of the machine that automated light-bulb manufacture. | 1926 | Dearborn | Michigan | United States | Located at The Henry Ford museum. ASME brochure |
| 82 | 1983 | FMC Citrus Juice Extractor Early example of machines that automated extraction of juices from fruit. | 1947 | Lakeland | Florida | United States | Plaque not on display. ASME brochure |
| 83 | 1983 | Pennsylvania Railroad GG1 Electric Locomotive #4800 Locomotive prototype for use on electrified lines in eastern US, also exceptional for its flexible suspension system. | 1943 | Strasburg | Pennsylvania | United States | Located at the Railroad Museum of Pennsylvania ASME brochure |
| 84 | 1983 | Reed Gold Mine Ten-Stamp Mill Typical late 19th-century western-US stamp mill. | 1895 | Midland | North Carolina | United States | ASME brochure |
| 85 | 1983 | PACECO Container Crane World's first high-speed, dockside container-handling crane. | 1959 | Alameda | California | United States | 1987: Purchased by and now located in Port of Nanjing, China. 1988: Rededicated in conjunction with Chinese Mechanical Engineering Society. ASME brochure |
| 86 | 1983 | Owens AR Bottle Machine World's first automated bottling machine that introduced cheap and plentiful supply of glass containers. | 1912 | Toledo | Ohio | United States | No longer exists. No ASME brochure available |
| 87 | 1983 | NS Savannah The world's first nuclear-powered cargo-passenger ship. | 1962 | Newport News | Virginia | United States | ASME brochure |
| 88 | 1983 | Xerography Early models of revolutionary dry-copying process at the Battelle Memorial Institute. | 1948 | Columbus | Ohio | United States | ASME brochure |
| 89 | 1983 | Wyman-Gordon 50,000-ton Hydraulic Forging Press One of the world's largest fabrication tools, influencing aviation and aerospace technology. | 1955 | Grafton | Massachusetts | United States | ASME brochure |
| 90 | 1984 | IBM 350 RAMAC Disk File World's first computer storage device with random access to large volumes of data. | 1956 | San Jose | California | United States | 2019: Site demolished. Artifacts now at Computer Museum; plaque not on display. ASME brochure |
| 91 | 1984 | Archimedes Screw Pump One of the US's oldest surviving examples of the wind-driven Archimedes screw-pump. | 1890 | Newark | California | United States | ASME brochure |
| 92 | 1984 | Stanford Linear Accelerator Center Unique electromechanical devices and systems in the longest accelerator in the world. | 1962 | Menlo Park | California | United States | ASME brochure |
| 93 | 1984 | Holland Tunnel Ventilation System The world's first long underwater tunnel designed for motor vehicles, with innovative ventilating system. | 1920 | New York | New York | United States | ASME brochure |
| 94 | 1984 | Norfolk & Western #611, Class J Steam Locomotive The last survivor of US coal-fired passenger locomotives, considered among the most advanced of any 4-8-4. | 1941 | Roanoke | Virginia | United States | Located at Virginia Museum of Transportation. ASME brochure |
| 95 | 1984 | Sikorsky VS-300 Helicopter The first practical US helicopter, pioneering the single-main-rotor concept. | 1939 | Dearborn | Michigan | United States | Located at The Henry Ford museum. ASME brochure |
| 96 | 1984 | Quincy Mining Company No. 2 Mine Hoist The world's largest mine hoist. | 1920 | Hancock | Michigan | United States | ASME brochure |
| 97 | 1984 | SS Great Britain The world's first iron-hulled, screw-propelled ship to cross any ocean, leading to Britain's world leadership in maritime commerce. | 1843 | Bristol | South West England | United Kingdom | ASME brochure |
| 98 | 1984 | SS Jeremiah O'Brien One of only two operating survivors of the US emergency-cargo fleet known as Liberty Ships. | 1943 | San Francisco | California | United States | ASME brochure |
| 99 | 1984 | Idols Station, Fries Manufacturing & Power Company Typical 19th-century small-scale, low-head run-of-the-river hydroelectric plant. | 1898 | Winston-Salem | North Carolina | United States | ASME brochure |
| 100 | 1984 | Belle Isle Gas Turbine The first gas turbine used for electric utility power generation in the United States. | 1949 | Schenectady | New York | United States | ASME brochure |
| 101 | 1984 | St. Charles Avenue Streetcar Line The oldest surviving interurban-urban passenger rail transport system in the United States. | 1835 | New Orleans | Louisiana | United States | ASME brochure |
| 102 | 1985 | Atlas Launch Vehicle First launch vehicle for the US space program. | 1957 | El Cajon | California | United States | ASME brochure |
| 103 | 1985 | First Hot Isostatic Processing Vessels Early examples of fabrication vessels using gas pressure and temperature to produce advanced alloy and ceramic products. | 1956 | Columbus | Ohio | United States | Located at Battelle Memorial Institute. ASME brochure |
| 104 | 1985 | Basic-Oxygen Steel Making Vessel Vessel that introduced the basic oxygen process to the United States. | 1955 | Trenton | Michigan | United States | Presently owned by Detroit Steel Company. ASME brochure |
| 105 | 1985 | Detroit Edison District Heating System Early example of typical US district heating plant. | 1903 | Detroit | Michigan | United States | ASME brochure |
| 106 | 1985 | Cornwall Iron Furnace Typical 19th-century US charcoal-fueled blast furnace, fully intact. | 1742 | Cornwall | Pennsylvania | United States | ASME brochure |
| 107 | 1985 | Lowell Power Canal System and Pawtucket Gatehouse Early major US water-power system and the first Francis inward-flow water turbine placed in service and oldest in existence. | 1796 | Lowell | Massachusetts | United States | ASME brochure |
| 108 | 1985 | Jacobs Engine Brake Retarder The first practical mechanism for braking large trucks with engine compression as they descend long, steep grades at controlled speeds. | 1957 | Bloomfield | Connecticut | United States | ASME brochure |
| 109 | 1985 | Geysers Unit 1 The first commercial geothermal electricity-generating station in North America. | 1960 | Sonoma County | California | United States | ASME brochure |
| 110 | 1985 | Harris-Corliss Steam Engine Example of a late 19th-century 350-hp Corliss-type steam engine. | 1895 | Atlanta | Georgia | United States | Located at Randall Brothers, Inc. ASME brochure |
| 111 | 1986 | Boulton & Watt Rotative Steam Engine Oldest surviving operable rotative steam engine by Boulton and Watt. | 1785 | Sydney | New South Wales | Australia | Located at the Powerhouse Museum. ASME brochure |
| 112 | 1985 | TV Emery Rice Steam Engine Mid-19th-century horizontal compound marine steam engine with return connecting rod. | 1873 | Kings Point | New York | United States | ASME brochure |
| 113 | 1986 | Fairbanks Exploration Company Gold Dredge No. 8 One of the last mammoth gold dredges in the United States accessible to the public. | 1927 | Fairbanks | Alaska | United States | ASME brochure |
| 114 | 1986 | Pitney-Bowes Model M Postage Meter Early model of world's first commercial postage meter. | 1920 | Stamford | Connecticut | United States | ASME brochure |
| 115 | 1986 | Disneyland Monorail System The first commercial Wenner-Gren monorail system. | 1959 | Anaheim | California | United States | ASME brochure |
| 116 | 1987 | McKinley Climatic Laboratory Test facility with unequalled capacity to simulate a wide range of climatic conditions from arctic cold to jungle moisture for full-scale equipment testing. | 1944 | Eglin Air Force Base | Florida | United States | ASME brochure |
| 117 | 1987 | Icing Research Tunnel, NASA Lewis Research Center The world's oldest and largest refrigerated icing wind tunnel, with unique heat exchanger and spray system. | 1944 | Cleveland | Ohio | United States | ASME brochure |
| 118 | 1987 | Samson Mine Reversible Waterwheel & Man Engine Hoists representative of bygone practice, including a waterwheel for ore hoisting and a mechanism to hoist workers. | 1837 | Sankt Andreasberg | Lower Saxony | Germany | ASME brochure |
| 119 | 1987 | American Precision Museum | 1966 | Windsor | Vermont | United States | No ASME brochure available |
| 120 | 1987 | Robbins & Lawrence Machine Shop Site of first machine shop to achieve interchangeable manufacture on a practical scale. | 1846 | Windsor | Vermont | United States | ASME brochure |
| 121 | 1987 | Holly Fire Protection and Water System Site of the first US integrated system to supply water for public safety. | 1863 | Lockport | New York | United States | No ASME brochure available |
| 122 | 1987 | Holly District Heating System Site of the first US district heating steam-heating system. | 1877 | Lockport | New York | United States | No ASME brochure available |
| 123 | 1987 | Kingsbury Thrust Bearing First and still-operating Kingsbury thrust bearing in hydroelectric service, later used worldwide for all types of large machinery. | 1911 | Holtwood | Pennsylvania | United States | Located at Holtwood Dam. ASME brochure |
| 124 | 1987 | Chapin Mine Pump Late 19th-century steeple compound-condensing engine and one of the largest at the time. | 1893 | Iron Mountain | Michigan | United States | ASME brochure |
| 125 | 1987 | Pullman Sleeping Car Glengyle Earliest known survivor of the fleet of heavyweight, all-steel sleepers built by the Pullman Company. | 1911 | Dallas | Texas | United States | Located at Museum of the American Railroad. ASME brochure |
| 126 | 1987 | Westmoreland Iron Works An early and long-running malleable ironworks. | 1850 | Westmoreland | New York | United States | Early 1990s: Foundry closed and plaque given to the Westmoreland Historical Society. No ASME brochure available |
| 127 | 1987 | Big Brutus Mine Shovel One of the world's largest power shovels. | 1962 | West Mineral | Kansas | United States | ASME brochure |
| 128 | 1987 | Vallecitos Boiling Water Reactor The world's first privately owned and operated nuclear power plant to deliver significant quantities of electricity to a public utility grid. | 1957 | Alameda County | California | United States | ASME brochure |
| 129 | 1987 | Holyoke Water Power System Major 19th-century US industrial center for paper and textile industries, known for its machine shops and water-power system. | 1859 | Holyoke | Massachusetts | United States | See also: Holyoke Dam, Holyoke Heritage State Park. No ASME brochure available |
| 130 | 1987 | Stirling Water-tube Boilers Oldest existing steam generator in a US cotton mill. | 1906 | Dalton | Georgia | United States | No ASME brochure available |
| 131 | 1988 | Roosa Master Diesel Fuel-Injection Pump Early developmental models of distributor-type injection pump for controlling engine speed. | 1947 | Windsor | Connecticut | United States | ASME brochure |
| 132 | 1988 | Chicago Burlington & Quincy Railroad Roundhouse Innovative railroad yard machine shop for first railroad linking Chicago and the Mississippi River. | 1858 | Aurora | Illinois | United States | ASME brochure |
| 133 | 1988 | Buckeye Steam Traction Ditcher Earliest surviving example of the first successful traction ditching machine for laying agricultural drainage tiles. | 1902 | Findlay | Ohio | United States | Located at Hancock Historical Museum. ASME brochure |
| 134 | 1988 | Geared Locomotives of Heisler, Shay, Climax Early examples of small slow-speed 19th-century geared locomotives. | 1872 | Felton | California | United States | No ASME brochure available |
| 135 | 1988 | Neuchâtel Gas Turbine The world's first successful electricity-generating gas turbine to go into commercial operation. | 1939 | Neuchâtel | Neuchâtel | Switzerland | ASME brochure |
| 136 | 1988 | AAR Railroad-wheel Dynamometer The first and only railroad dynamometer to test track wheels using vertical and lateral loads as well as thermal braking at the wheel rim. | 1955 | Pueblo | Colorado | United States | ASME brochure |
| 137 | 1989 | Texas & Pacific #610 Lima Superpower Steam Locomotive The sole surviving example of the earliest form of "superpower" steam locomotives. | 1927 | Rusk | Texas | United States | No ASME brochure available |
| 138 | 1989 | ASME Boiler and Pressure Vessel Code The first comprehensive standard for the design, construction, inspection, and testing of boilers and pressure vessels, greatly influencing public safety. | 1915 | Dearborn | Michigan | United States | Early book on loan to The Henry Ford museum. No ASME brochure available |
| 139 | 1989 | Roebling 80-ton Wire Rope Machine The only remaining Roebling machine, largest wire-rope closing machine in 1893. | 1893 | Trenton | New Jersey | United States | ASME brochure |
| 140 | 1989 | Propulsion Wind Tunnel Facility Wind Tunnel The world's first large-scale testing facility for jet and rocket engines in simulated high-speed flight conditions. | 1955 | Arnold Air Force Base | Tennessee | United States | No ASME brochure available |
| 141 | 1989 | Browning Firearms Collection Collection of sporting and military firearms designed by John Moses Browning. | 1878 | Ogden | Utah | United States | Located at Ogden Union Station Museum. ASME brochure |
| 142 | 1990 | Pierce-Donachy Ventricular Assist Device The world's first implantable heart pump to receive widespread clinical use. | 1973 | Hershey | Pennsylvania | United States | ASME brochure |
| 143 | 1990 | USS Cairo Engine and Boilers The sole survivor of the fleet of river gunboats built by the Union during the US Civil War. | 1862 | Vicksburg | Mississippi | United States | ASME brochure |
| 144 | 1990 | Curtis 500-kW Vertical Turbine The first steam turbine electric-generation station. | 1903 | Indianapolis | Indiana | United States | ASME brochure |
| 145 | 1990 | Southern Gas Association-PCRC Analog Facility The first computer system to be applied to the design of natural-gas pipeline systems. | 1955 | San Antonio | Texas | United States | ASME brochure |
| 146 | 1990 | National Soil Dynamics Laboratory The world's first full-size laboratory for tillage tools and traction equipment in all types of soils. | 1935 | Auburn | Alabama | United States | ASME brochure |
| 147 | 1990 | Baltimore & Ohio #4500, Freight, USRA 2-8-2A The first USRA freight locomotive built, representing the first standardized family of US locomotives. | 1918 | Baltimore | Maryland | United States | ASME brochure |
| 148 | 1990 | Atlantic Coast Line #1504, USRA 4-6-2A An early example of USRA passenger locomotives representing the first US standardization program. | 1919 | Jacksonville | Florida | United States | Located at the Prime Osborn Convention Center. ASME brochure |
| 149 | 1990 | Hydromatic Propeller Early example of propeller innovations, including variable-pitch control and feathering capability. | 1938 | Windsor Locks | Connecticut | United States | Located at the New England Air Museum. ASME brochure |
| 150 | 1990 | Pin-Ticketing Machine Early model of first successful price-marking, tag-attachment machine for US retail merchandising. | 1902 | Miamisburg | Ohio | United States | ASME brochure |
| 151 | 1991 | Victoria Dutch Windmill Mid-19th-century wind-powered gristmill of Dutch turret-mill style. | 1870 | Victoria | Texas | United States | ASME brochure |
| 152 | 1991 | Jeep Model MB Early four-wheel drive, multipurpose field vehicle representing an unusual combination of modern vehicle design. | 1947 | Toledo | Ohio | United States | ASME brochure |
| 153 | 1991 | Cruquius Pumping Station 19th-century steam pumping station that drained the Haarlemmermeer. | 1849 | Haarlemmermeer | North Holland | Netherlands | ASME brochure |
| 154 | 1991 | Greens Bayou Generator Plant The first fully outdoor turbine-generator to be placed in commercial operation. | 1949 | Houston | Texas | United States | ASME brochure |
| 155 | 1991 | Milam High-rise Air Conditioned Building The first US air-conditioned high-rise office building. | 1928 | San Antonio | Texas | United States | ASME brochure |
| 156 | 1991 | Lookout Mountain Incline Railway 19th-century 3-rail incline. | 1895 | Chattanooga | Tennessee | United States | ASME brochure |
| 157 | 1991 | Pelton Waterwheel Collection Collection on the origins of the Pelton turbine and its principle of the "splitter" bucket. | ca. 1880 | Grass Valley | California | United States | ASME brochure |
| 158 | 1991 | Fresno Scraper 19th-century example of the scraper whose design served as the basis for most giant earth-movers. | 1883 | Fresno | California | United States | ASME brochure |
| 159 | 1991 | Nassawango Iron Furnace The earliest surviving hot-blast furnace in the United States. | 1828 | Snow Hill | Maryland | United States | ASME brochure |
| 160 | 1992 | ABACUS II Integrated-Circuit Wire Bonder The world's first practical production machine for the assembly of integrated circuits, making possible their economical production. | | Dallas | Texas | United States | ASME brochure |
| 161 | 1992 | Q-R-S Marking Piano One of the first machines to produce master rolls for player pianos by recording actual performances. | 1912 | Buffalo | New York | United States | ASME brochure |
| 162 | 1992 | Apollo Space Command Module Apollo command module incorporating many innovations to allow safe transport of humans to moon and back. | 1968 | Titusville | Florida | United States | ASME brochure |
| 163 | 1992 | Meter-type Gas Odorizer Early safety device for introducing odor into natural-gas lines to make leaks apparent. | 1937 | Dallas | Texas | United States | ASME brochure |
| 164 | 1992 | New England Wireless and Steam Museum Collection of Rhode Island steam engines, including one of the few surviving built at the Corliss Works. | 1964 | East Greenwich | Rhode Island | United States | ASME brochure |
| 165 | 1992 | Old Mill in Nantucket The oldest operating smock-type windmill in the United States. | 1746 | Nantucket | Massachusetts | United States | ASME brochure |
| 166 | 1992 | Milwaukee River Flushing Station A water pump which reduced the concentration of pollutants in an urban stream had the world's greatest capacity. | 1888 | Milwaukee | Wisconsin | United States | Now part of coffee shop. ASME brochure |
| 167 | 1993 | Ginaca Pineapple Processing Machine Example of automated peeling and slicing machine that led to commercial pineapple production. | 1911 | Honolulu | Hawaii | United States | ASME brochure |
| 168 | 1993 | Pegasus 3 Engine BS 916 Earliest surviving example of the prototype engine for vertical/short takeoff and landing (V/STOL) jets, namely Harriers and AV-8Bs | 1960 | Bristol | South West England | United Kingdom | ASME brochure |
| 169 | 1993 | Cryogenic Cooling System, Fermilab Tevatron The largest cryogenic system ever built, providing benchmark for superconducting magnet designs. | 1983 | Batavia | Illinois | United States | ASME brochure |
| 170 | 1993 | Advanced Engine Test Facility at Marshall Unique cooling system for the testing of aerospace engines. | 1964 | Redstone Arsenal | Alabama | United States | ASME brochure |
| 171 | 1993 | Voyager Spacecraft Interplanetary Explorers The two most intelligent machines ever built by NASA space program. | 1972–1977 | Pasadena | California | United States | Located at Jet Propulsion Laboratory. ASME brochure |
| 172 | 1994 | Bay City Walking Dredge The last remaining dredge in the United States with unique propulsion system, designed for a wetlands environment. | 1924 | Naples | Florida | United States | ASME brochure |
| 173 | 1994 | Burton Farmers Gin Mill The earliest known survivor of an integrated cotton ginning system widely used in the southern United States. | 1914 | Burton | Texas | United States | ASME brochure |
| 174 | 1994 | Crown Cork and Soda Filling Machine One of two surviving automated machines that founded the bottling industry. | 1892 | Baltimore | Maryland | United States | ASME brochure |
| 175 | 1994 | Bergen County Steam Collection A collection of operational steam engines and auxiliary equipment from the 19th century to the 1940s. | 1987 | Hackensack | New Jersey | United States | ASME brochure |
| 176 | 1994 | Union Pacific Big Boy 4023 and Centennial 6900 Two heavy-tonnage locomotives incorporating the best features of the day. | 1941 | Omaha | Nebraska | United States | ASME brochure |
| 177 | 1994 | Barker Turbine/Hacienda Buena Vista The only known example of a Barker hydraulic turbine, the earliest practical reaction type. | 1853 | Ponce | Puerto Rico | United States | ASME brochure |
| 178 | 1994 | Boeing 367-80 Prototype of the Boeing 707 and most jet transport systems, establishing economic feasibility of commercial air travel. | 1954 | Fairfax County | Virginia | United States | Located at Steven F. Udvar-Hazy Center. ASME brochure |
| 179 | 1994 | Newell Shredder The second and earliest surviving automobile shredder for recycling scrap metal. | 1969 | San Antonio | Texas | United States | ASME brochure |
| 180 | 1994 | Johnstown Incline One of the world's steepest vehicular inclines, typical of several built in the 19th century in Western Pennsylvania. | 1891 | Johnstown | Pennsylvania | United States | ASME brochure |
| 181 | 1994 | B.F. Clyde's Cider Mill The oldest steam powdered cider mill in the US. A rare survivor of a once-commonplace rural US industry. | 1898 | Mystic | Connecticut | United States | ASME brochure |
| 182 | 1995 | Knight Foundry and Machine Shop One of the earliest US water-powered foundry-machine shops, including Knight impulse turbines. | 1873 | Sutter Creek | California | United States | ASME brochure |
| 183 | 1995 | Wright Field 5-foot Wind Tunnel Early example of the "modern" wind tunnel for aircraft-model testing. | 1921 | Wright-Patterson Air Force Base | Ohio | United States | ASME brochure |
| 184 | 1995 | Gravimetric Coal Feeder The earliest known coal feeder, representing innovations that influenced nearly all industries using coal-fired boilers. | 1957 | Cleveland | Ohio | United States | ASME brochure |
| 185 | 1995 | Ljungström Air Preheater Experimental model of the industrial air preheater, now used worldwide. | 1920 | Stockholm | Stockholm County | Sweden | ASME brochure |
| 186 | 1995 | Steamboat William G. Mather Prototypical ore boat on the Great Lakes. | 1925 | Cleveland | Ohio | United States | ASME brochure |
| 187 | 1996 | NASA Ames Unitary Plan Wind Tunnel R&D facility for testing of supersonic aircraft and spacecraft. | 1956 | Mountain View | California | United States | ASME brochure |
| 188 | 1996 | Garfield Thomas Water Tunnel Unique experimental facility for hydrodynamic research and testing. | 1949 | State College | Pennsylvania | United States | Located at Pennsylvania State University. ASME brochure |
| 189 | 1996 | Montgomery Glider First heavier-than-air human-carrying aircraft to achieve controlled piloted flight. | 1883 | San Carlos | California | United States | Located at Hiller Aviation Museum. ASME brochure |
| 190 | 1996 | Hart Parr Tractor Earliest known internal-combustion-engined agricultural tractor in the United States. | 1903 | Charles City | Iowa | United States | ASME brochure |
| 191 | 1996 | SS Badger Carferry One of the last operating American steam lake boats with reciprocating engines and coal-fired boilers. | 1952 | Ludington | Michigan | United States | ASME brochure |
| 192 | 1996 | Thermo King© C Refrigeration Unit Earliest known refrigeration unit for trucks, having worldwide impact on food preservation. | 1940 | Minneapolis | Minnesota | United States | ASME brochure |
| 193 | 1997 | Alligator Amphibian Prototype of all tracked ship-to-shore landing vehicles. | 1940 | Quantico | Virginia | United States | Located at the Marine Corps Air-Ground Museum. ASME brochure |
| 194 | 1997 | Kew Bridge Cornish Beam Engines Five notable 19th-century Cornish beam engines for municipal water supply. | 1975 | Brentford | Greater London | United Kingdom | ASME brochure |
| 195 | 1997 | Bay Area Rapid Transit The most advanced automated urban rail transit system incorporating many innovations, marking a new generation of rail travel. | 1972 | San Francisco Bay Area | California | United States | ASME brochure |
| 196 | 1997 | Bessemer Conversion Engine An early example of the successful conversion of steam engines to internal-combustion engines. | ca. 1900 | Rockford | Michigan | United States | ASME brochure |
| 197 | 1998 | David Taylor Model Basin Among the world's largest test facilities for the development of ship design. | 1939 | Bethesda | Maryland | United States | ASME brochure |
| 198 | 1998 | GE's Ultra High Pressure Apparatus for the Production of Diamonds First apparatus to consistently produce industrial diamonds, demonstrating fundamentals of producing and containing very high pressures and becoming the basis for the industrial-diamond production that followed. | 1954 | Schenectady | New York | United States | Located at the Schenectady Museum. No ASME brochure available |
| 199 | 1998 | Hulett Ore Unloaders The largest and oldest surviving example of a highly efficient materials-handling machine unique to the Great Lakes that revolutionized ore handling and led to its rapid adoption throughout the lower-lake ore ports. | 1912 | Cleveland | Ohio | United States | 2000: 2 of the 4 loaders have been demolished and scrapped, while the other 2 were disassembled. ASME brochure |
| 200 | 1998 | Paddle Steamer Uri The oldest operating vessel with a diagonal, compound steam engine, with disc valve gear. | 1901 | Lucerne | Lucerne | Switzerland | ASME brochure |
| 201 | 1998 | Cooper Steam Traction Engine Collection Engines from the collection are among the oldest surviving agricultural steam engines, from 1860 to 1883, showing the conversion to mechanized farming. | 1860–1883 | Mount Vernon | Ohio | United States | Located at the Knox County Historical Society. ASME brochure |
| 202 | 1998 | William Tod Rolling-Mill Engine Representative of steam-powered rolling-mill-engine drives early in the transition to electric drive and typical of the largest work pieces produced by U.S. foundries and forges. | 1914 | Youngstown | Ohio | United States | No ASME brochure available |
| 203 | 1998 | Siegfried Marcus Car Direct predecessor of the modern automobile. | ca. 1875 | Vienna | | Austria | Located at the Technical Museum, Vienna. No ASME brochure available |
| 204 | 1999 | Kinne Water Turbine Collection The largest collection of American turbine development. | 1907–1937 | Watertown | New York | United States | Located at the Jefferson County Historical Society. ASME brochure |
| 205 | 1999 | Peterborough Hydraulic (Canal) Lift Lock The world's highest operating hydraulic lift lock, operating on the balance principle. | 1904 | Peterborough | Ontario | Canada | No ASME brochure available |
| 206 | 1999 | Merrill Wheel Balancing System Innovative method of wheel balancing (on the vehicle) adopted worldwide. | 1945 | Englewood | Colorado | United States | No ASME brochure available |
| 207 | 2000 | Refrigeration Research Museum A private collection that represents many of the advances in mechanical refrigeration for US residential and commercial use from the late 19th century up to 1960. | 1890–1960 | Brighton | Michigan | United States | ASME brochure |
| 208 | 2000 | Fairbanks-Morse Y-VA Engine Diesel The earliest (perhaps only) existing example of early high-compression, cold-start, full-diesel engines developed in the United States for isolated or rural power generation machinery before widespread electrification was available. | 1924 | Lee County | Florida | United States | ASME brochure |
| 209 | 2000 | USS Albacore An experimental submarine that pioneered the teardrop-shaped hull, high-strength steel, and many other test concepts affecting speed, depth changes, and underwater maneuvering. | 1953 | Portsmouth | New Hampshire | United States | ASME brochure |
| 210 | 2000 | Link C-3 Flight Trainer An early flight simulator representative of the first truly effective mechanical device used to simulate actual flight processes. | ca. 1935 | Binghamton | New York | United States | ASME brochure |
| 211 | 2000 | Tokaido Shinkansen The world's first high-speed railway, which operated at about 210 km/h (130 mph). | 1964 | Tokyo to Shin-Ōsaka | | Japan | No ASME brochure available |
| 212 | 2000 | EIMCO Rocker Shovel Loader, Model 12B The first successful mining device to replace human labor in removing the rubble from underground hard-rock blasting. | 1938 | Park City | Utah | United States | Plaque located at Miners Plaza in historic Old Park City. ASME brochure |
| 213 | 2000 | George W. Woodruff School of Mechanical Engineering Leader in transforming mechanical engineering education from a shop-based, vocational program to a professional one built on rigorous academic and analytical methods. | 1888 | Atlanta | Georgia | United States | ASME brochure |
| 214 | 2001 | Colvin Run Mill A good example of a typical early 19th-century (US) water-powered, Evans-type flour mill, restored into operating condition. | ca. 1810 | Great Falls | Virginia | United States | ASME brochure |
| 215 | 2001 | Coolspring Power Museum An impressive variety of internal combustion engines, built primarily between 1890 and 1920 and consisting mainly of stationary engines used in industrial applications. | 1890–1929 | Coolspring | Pennsylvania | United States | ASME brochure |
| 216 | 2001 | Arecibo Observatory The largest single-aperture radio telescope ever constructed. | 1963 | Arecibo | Puerto Rico | United States | Joint designation with IEEE. ASME brochure |
| 217 | 2001 | Radio City Music Hall Hydraulically Actuated Stage One of the largest movable stages in the world with innovative hydraulic equipment and controls, a forerunner of other stage designs as well as early aircraft carrier elevator systems. | 1932 | New York | New York | United States | No ASME brochure available |
| 218 | 2002 | Apollo Lunar Module LM-13 First piloted vehicle designed to operate solely in the vacuum of space. | 1972 | Garden City | New York | United States | Located at the Cradle of Aviation Museum. ASME brochure |
| 219 | 2002 | Howard Hughes Flying Boat, HK-1 The largest wood-constructed and the largest wingspan airplane ever built. | 1947 | McMinnville | Oregon | United States | Located at the Evergreen Aviation & Space Museum. ASME brochure |
| 220 | 2002 | Pilatusbahn The world's steepest cog railway. | 1882 | Mount Pilatus | | Switzerland | ASME brochure |
| 221 | 2002 | Brandywine River Powder Mills The largest U.S. maker of explosive black powder, a once-important and now-obsolete 19th-century technology. | 1803–1921 | Wilmington | Delaware | United States | ASME brochure |
| 222 | 2002 | Ditch Witch® DWP Service-Line Trencher The first mechanized, compact service-line trencher. | 1952 | Perry | Oklahoma | United States | ASME brochure |
| 223 | 2003 | Solar Energy and Energy Conversion Laboratory Pioneering developments in solar-energy applications, with global accomplishments in training and innovation. | 1954 | Gainesville | Florida | United States | ASME brochure |
| 224 | 2003 | Wright Flyer III The first practical airplane. | 1905 | Dayton | Ohio | United States | Located at the Dayton Aviation Heritage National Historical Park. ASME brochure |
| 225 | 2003 | Rumely Companies' Agricultural Products Produced a line of agricultural equipment that played a vital role in the evolution of farming. | 1853 | La Porte | Indiana | United States | ASME brochure |
| 226 | 2003 | Eddystone Station Unit #1 The second U.S. (earliest extant) supercritical steam-electric generating unit, pioneering significant increases in steam pressure, steam temperature, and unit size. | 1960 | Eddystone | Pennsylvania | United States | ASME brochure |
| 227 | 2003 | First Ram-Type Blowout Preventer (BOP) First ram-type blowout preventer, which sealed the wellhead and controlled pressure during drilling and oil production operations. | 1922 | Houston | Texas | United States | ASME brochure |
| 228 | 2003 | Philo 6 Steam-Electric Generating Unit The world's first commercial supercritical steam-electric generating unit. | 1957 | Columbus | Ohio | United States | ASME brochure |
| 229 | 2003 | Great Northern 2313 — Montana Western 31 Gas The oldest-surviving Electro-motive Company (EMC) gas-electric rail motorcar and the oldest with Lemp control. | 1925 | North Freedom | Wisconsin | United States | Located at the Mid-Continent Railway Museum. ASME brochure |
| 230 | 2004 | Lapeyre Automatic Shrimp Peeling Machine For decades, the elegantly simple Model A has proven to be the most effective and widely used method of automatic shrimp peeling, despite attempts by others to develop alternative approaches. | 1949 | Biloxi | Mississippi | United States | ASME brochure |
| 231 | 2004 | R.G. Letourneau Mountain Mover This innovative scraper moved four times as much earth as conventional machines of the era which required a tractor and two operators. | 1922 | Longview | Texas | United States | ASME brochure |
| 232 | 2004 | Reuleaux Collection Of Kinematic Mechanisms The world's largest collection of 19th-century kinematic mechanisms. | 1882 | Ithaca | New York | United States | Located at Cornell University. ASME brochure |
| 233 | 2005 | Model T 15 millionth Model T to come off the assembly line, marking the end of its production. | 1908–1927 | Dearborn | Michigan | United States | Located at The Henry Ford museum. ASME brochure |
| 234 | 2005 | The United States Standard Screw Threads The first US system of standardized screw threads. | 1864 | Philadelphia | Pennsylvania | United States | ASME brochure |
| 235 | 2005 | Ottmar Mergenthaler's Square Base Linotype Machine One of two surviving square-base linotypes. | 1886 | Carson | California | United States | Located at the International Printing Museum. No ASME brochure available |
| 236 | 2005 | Birome Ballpoint Pen Collection First ballpoint pens; utilized the concept of a quick-drying ink whose flow is controlled by gravity and a metal ball housed in a socket. | 1938–1948 | Buenos Aires | | Argentina | ASME brochure |
| 237 | 2005 | Eiffel Drop Test Machine and Wind Tunnel Most accurate to date drop-test device and wind tunnel to measure drag on falling objects of various shapes. | 1903 & 1912 | Paris | | France | ASME brochure |
| 238 | 2006 | Grumman Wildcat "Sto-Wing" Wing-folding Mechanism First functional wing-folding mechanism, enabling aircraft to take up less space on ships. | | Kalamazoo | Michigan | United States | Located at Air Zoo aviation museum. ASME brochure |
| 239 | 2006 | Hughes Glomar Explorer A deep-sea drillship platform initially built for the United States Central Intelligence Agency Special Activities Division secret operation Project Azorian to recover the sunken Soviet submarine, K-129, lost in April 1968. | 1972 | Houston | Texas | United States | ASME brochure |
| 240 | 2006 | Cooper-Bessemer Type GMV Integral-Angle Gas E Providing efficient compression energy for natural gas, petrochemical, refinery, and power industries around the world. | 1944 | Mount Vernon | Ohio | United States | Located at the Knox County Historical Museum. ASME brochure |
| 241 | 2006 | Noria al-Muhammadiyya A set of seventeen large water wheels operating on the River Orontes as they have for many centuries. | 1361 | Hama | Hama Governorate | Syria | ASME brochure |
| 242 | 2006 | Split-Hopkinson Pressure Bar Apparatus (1962) The first apparatus able to directly generate a complete dynamic (high-rate) stress-strain curve in a single experiment. | 1962 | San Antonio | Texas | United States | ASME brochure |
| 243 | 2008 | Digital Micromirror Device Modulating digital light pulses using up to 2 million micromirrors. | 1996 | Plano | Texas | United States | ASME brochure |
| 244 | 2008 | Johnson Controls Multi-Zone Automatic Temperature Control System The first automated temperature control system for multi-zone applications. | 1895 | Milwaukee | Wisconsin | United States | Located at Johnson Controls HQ bldg. ASME brochure |
| 245 | 2008 | John Penn & Sons Oscillating Steam Engine The first steam engine to utilize oscillatory cylinders. Installed in the steamboat Diesbar. | 1841 | Dresden | Saxony | Germany | ASME brochure |
| 246 | 2009 | Hughes Two-Cone Drill Bit Key technology that allowed drilling through medium and hard rock, tapped vast oil reservoirs much deeper below the surface than previously possible, and significantly improved the efficiency and cost of drilling. | 1908 | The Woodlands | Texas | United States | ASME brochure |
| 247 | 2010 | Belle of Louisville The oldest operating "western rivers" steamboat. | 1914 | Louisville | Kentucky | United States | ASME brochure |
| 248 | 2011 | Southern Railway Spencer Shops One of the few remaining intact 20th-century railroad locomotive facilities in the United States. | 1896 | Spencer | North Carolina | United States | Now the North Carolina Transportation Museum. ASME brochure |
| 249 | 2011 | Sholes & Glidden 'Type Writer' Represents the first commercially successful typewriter to be manufactured in quantity for sale to the public. | 1873 | Milwaukee | Wisconsin | United States | Located at the Milwaukee Public Museum. ASME brochure |
| 250 | 2012 | Mr. Charlie Oil Drilling Rig The first offshore drilling rig that was fully transportable, submersible and self-sufficient. | 1953 | Morgan City | Louisiana | United States | ASME brochure |
| 251 | 2012 | Textile Machinery Collection at the American Textile History Museum Represents some of the most significant collection of 19th century tools and machinery for the manufacturing of textiles. | 1960 | Lowell | Massachusetts | United States | Museum closed in 2016. ASME brochure |
| 252 | 2013 | Big Surf Waterpark The first wave pool in North America to consistently generate 3–5 foot spilling waves suitable for surfing. | 1969 | Tempe | Arizona | United States | ASME brochure |
| 253 | 2013 | Titan Crane The largest crane of the hammer-head or "Titan" type. | 1907 | Clydebank | West Dunbartonshire | United Kingdom | No ASME brochure available |
| 254 | 2013 | Collection of the Earliest Self-Governing Windmills The Collection contains many early windmills. | 1870 | Batavia | Illinois | United States | Batavia, IL was the location of 6 'American Farm Windmill' makers from about 1870 until WWII. ASME brochure |
| 255 | 2013 | Apollo Space Suit Model A7L was the primary suit worn by astronauts on Project Apollo. | 1968 | Frederica | Delaware | United States | ASME brochure |
| 256 | 2014 | Thrust Supersonic Car (ThrustSSC) The first car to officially exceed the speed of sound, the ThrustSSC Supersonic Vehicle. | 1997 | Coventry | | United Kingdom | ASME brochure |
| 257 | 2015 | Northern Pacific Rotary Snow Plow No. 2 The first machine to reliably remove deeply packed snow from railroad tracks. | 1887 | Duluth | Minnesota | United States | ASME brochure |
| 258 | 2015 | Technology Collection at the George Eastman House The world's preeminent museum of photography with many important artifacts. | 1949 | Rochester | New York | United States | ASME brochure |
| 259 | 2015 | Funicular Giessbach, designed by Carl Roman Abt The first funicular to employ a single, two-rail track, with a short side track for the two cars to pass at midpoint. The passing track used turnouts with no moving parts known as Abt Switches. | 1879 | Giessbach | Brienz | Switzerland | ASME brochure |
| 260 | 2016 | Pratt & Whitney R-1340 Wasp engine The Wasp R-1340 was a significant improvement to the radial aircraft engine design, making commercial aviation viable as early as the 1920s. | 1925 | Windsor Locks | Connecticut | United States | ASME brochure |
| 261 | 2016 | 3D Printing: Stereolithography First commercially available 3D Printer, developed by Charles Hull. | 1984 | Rock Hill | South Carolina | United States | ASME brochure |
| 262 | 2016 | Worthington Direct Acting Steam Pumps The pumps built by the firm of Worthington & Baker with worldwide industrial applications. | 1838 | Newport News | Virginia | United States | Henry Worthington was a founder of ASME. ASME brochure |
| 263 | 2016 | Rainhill Locomotive Trials An important competition in the early days of steam locomotive railways. Five engines competed along a mile length of level track. | 1829 | Rainhill | Lancashire | United Kingdom | ASME brochure |
| 264 | 2017 | Museo Storico dei Motori e dei Meccanismi Museum of Engines and Mechanisms: Stationary and transportation power units, with an emphasis on automotive and aircraft engines. | February 25, 2011 | Palermo | Sicily | Italy | Located at the University of Palermo. ASME brochure |
| 265 | 2018 | Single Crystal Turbine Blade Single crystal turbine blades have no crystalline boundaries, resulting in greater resistance to fracture and corrosion as well as vastly improved creep performance than conventional multi-crystalline nickel-cobalt alloy blades. Developed by Pratt & Whitney. | 1960s | Windsor Locks | Connecticut | United States | ASME brochure |
| 266 | 2018 | Carpet Tufting Apparatus Invented by Ernest Moench, the machinery featured a durable needle that punched loops of thick fabric through a web of backing material, resulting in the reliable, high-speed tufting of carpet. Descendants of the apparatus fabricate more than three-quarters of the carpets produced in the US. | 1928 | Dalton | Georgia | United States | ASME brochure |
| 267 | 2018 | Janney Railcar Coupler Recognized for its impact on rail safety and its technological significance. The interlocking coupler, which resembled a curled human hand, was the successor to the "link and pin" coupler, a device that required rail workers to stand between train cars while joining them-—a dangerous procedure that resulted in numerous injuries and deaths. | 1873 | | | United States | ASME brochure |
| 268 | 2018 | Princeton Plasma Physics Laboratory The laboratory has been at the forefront of the quest to develop magnetically controlled fusion energy since its founding by Lyman Spitzer, who invented the stellarator, or "star generator". | | Princeton | New Jersey | United States | ASME brochure |
| 269 | 2019 | Johannes Gutenberg's system of movable type system Gutenberg's movable type system reduced the time and cost of producing the printed word, resulting in the widespread availability of books and the advancement of literacy. His system incorporated a fast-drying ink; a durable easy-to-cast metal alloy for making type; a screw press designed for rapid operation; and an adjustable mold for the quick casting of metal type. | 1440 | Strasbourg | | France | virtual landmark ASME brochure (coming soon) |
| 270 | 2019 | The Thurston Collection of Laboratory Artifacts at Cornell University The devices used at Cornell between 1885 and 1905, exemplify Robert Henry Thurston's vision of the central role of the engineering laboratory in training mechanical engineers | 1885-1905 | Ithaca | New York | United States | ASME brochure |
| 271 | 2019 | Antikythera Mechanism The earliest known analog computer, an inscribed astronomical and calendrical device, designed to predict astronomical phenomena such as lunar and solar eclipses, as well as other functions. | 2nd C. BCE | | Athens | Greece | ASME brochure (coming soon) |
| 272 | 2019 | West Point Foundry Major American ironworking and machine shop site, operating from 1818 to early 20thC. It became most famous for its production of Parrott rifle artillery and other munitions, although it also manufactured a variety of iron products for civilian use. | 1818 | Cold Spring | New York | United States | West Point Foundry Preserve A/V tour (Scenic Hudson). ASME brochure |
| 273 | 2019 | Westinghouse Automatic Air Brake In 1869, George Westinghouse patented an automatic air brake system for railroads. It had a built-in safeguard to apply the brakes on the entire train should it separate. It made possible longer and faster trains and improved the safety of rail transportation. | 1872 | Pittsburgh | Pennsylvania | United States | ASME brochure |
| 274 | 2020 | Perkins Vapor-Compression Cycle for Refrigeration (Perkins) | 1834 | | | England | ASME brochure |
| 275 | 2021 | Reflections on the Motive Power of Fire (Carnot) | 1824 | | | France | virtual landmark |
| 276 | 2021 | Standardized Steam Property Tables | 1921 | | | United States | ASME brochure |
| 277 | 2022 | Finite Element Analysis | 1960s | | | United States | virtual landmark |
| 278 | 2022 | Crocodile Locomotive Ce 6/8 II | 1918 | Erstfeld | Uri | Switzerland | |