Photometer
notes: label: Description
content: Charles Deshler and Edwin J. McAllister, both of New Jersey, designed a photometer that manufacturers, buyers, sellers and users of incandescent lamps could use to rapidly and accurately ascertain how nearly such lamps approach standard rating. The inventor obtained a patent in 1900, and a Longstreth Medal from the Franklin Institute. The ivory scale on this example is marked “PORTABLE / NO / 636 / PHOTOMETER" and "NEWARK O. I. & SIGN WORKS / NEWARD, N.J. U.S.A." This refers to the Newark Ornamental and Iron Sign Works.
label: Description
content: Ref: “The Deshler-McAllister Portable Photometer,” <i>Electrical World and Electrical Engineer</i> 33 (1899): 386.
label: Description
content: Charles Deschler and E. J. McAllister, “Photometer,” U.S. Patent 640882 (Jan. 9, 1900).
label: Description
content: Charles Deshler and E. J. McAllister, “Portable Photometer,” <i>Journal of the Franklin Institute</i> 149 (1900): 318.
label: Location
content: Currently not on view
place: label: place made
content: United States: New York, Newark
setName: label: See more items in
content: Medicine and Science: Physical Sciences
creditLine: label: Credit Line
content: Clemson College
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.325774
label: catalog number
content: 325774
label: accession number
content: 255504
objectType: label: Object Name
content: Photometer
physicalDescription: label: Measurements
content: overall; part one lamp: 11 in x 4 5/8 in x 23 1/2 in; 27.94 cm x 11.7475 cm x 59.69 cm
label: Measurements
content: overall; part with 4 sockets: 6 3/4 in x 5 9/16 in x 18 in; 17.145 cm x 14.12875 cm x 45.72 cm
label: Measurements
content: overall; square bracket: 11 1/4 in x 6 in x 23 in; 28.575 cm x 15.24 cm x 58.42 cm
label: Measurements
content: overall; lamp: 9 1/4 in x 4 in; 23.495 cm x 10.16 cm