Felsenthal High Angle Firing Table
date: label: date made
content: ca 1960
name: label: maker
content: Felsenthal Instrument Co.
notes: label: Description
content: The U.S. Army used this wooden high-angle firing table when positioning 155 mm howitzer guns firing high-energy shells. The instrument has a white coating on both sides. A yellowed plastic indicator has wooden edges that are held together with brass rivets. The top edge of one side has scales for 100 yards and for range. This side also has three sets of scales for elevation, 10<strike>M</strike>SI, drift, and TF (target firing?). The sets of scales cover the use of M1 propellant with a muzzle velocity (MV) of 2,100; M1 propellant with MV 2,800; and M1917 propellant with MV 2,370. The left end is marked: 29105 (/) FT 155-S-2 C7 RULE No. 1. The right end is marked: HIGH ANGLE (/) GUN, 155MM. SHELL, H.E., M101 (/) M1 & M1A1 FUZE, M51.
label: Description
content: The other side has scales for 100 yards and range along both long edges. The center of the rule has two sets of scales, both for elevation, fuze, drift, and fuze settings of M55 and M67 with M1 propellant. These sets of scales are marked with the letter N. The left end is marked: 29105 (/) FT 155-S-2 C7 RULE N<sup>o</sup> 1. The right end is marked: GUN, 155 MM. SH. H.E., M101 (/) M1 & M1A1 FUZE, M51, M55, M67.
label: Description
content: The Felsenthal Instrument Company of Chicago made these artillery rules for distribution by the bookstore at Fort Sill, Okla., from World War II through the Vietnam War. For other instruments used to position howitzers, see 1977.1141.25, 1977.1141.26, 1977.1141.27, and 2005.0271.02. For Felsenthal company history, see 1977.1141.01 and 1977.1141.02.
label: Description
content: References: "Graphical Site Table," <i>The Field Artillery Journal</i> 35, no. 9 (September 1945): 548; accession file.
label: Location
content: Currently not on view
place: label: place made
content: United States: Oklahoma, Fort Sill
topic: label: Subject
content: Mathematics
label: Subject
content: Artillery
setName: label: See more items in
content: Medicine and Science: Mathematics
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content: Science & Mathematics
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content: Scale Rules
creditLine: label: Credit Line
content: Gift of Ben Wharton Rau and Margery Felsenthal Rau
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1977.1141.28
label: catalog number
content: 336412
label: accession number
content: 1977.1141
objectType: label: Object Name
content: scale rule
label: Object Name
content: rule
physicalDescription: label: Physical Description
content: wood (overall material)
label: Physical Description
content: plastic (overall material)
label: Physical Description
content: paper (overall material)
label: Physical Description
content: brass (overall material)
label: Measurements
content: overall: 1.1 cm x 29.4 cm x 6.8 cm; 7/16 in x 11 9/16 in x 2 11/16 in