Drawing Instrument, Triangulator
date: label: date made
content: ca 1943
label: date made
content: 1943
name: label: maker
content: Abrams Instrument Corporation
notes: label: Description
content: This instrument supplies a grid of lines for measuring photographs. The fitted compartments of the wooden case hold a socket wrench, an open end wrench, brass pin guides in two sizes, brass nuts, brass bolts, pins, and arms with slots down the middle and a hole at each end that may be joined together by nuts and bolts. These arms are made in three different lengths.
label: Description
content: A paper tag reads in part: Serial No. 227. It also reads in part: Date SEP 28 1943. It also reads: ABRAMS INSTRUMENT CO. (/) LANSING, MICHIGAN, U.S.A.
label: Description
content: For a related object, see MA.336631.
label: Description
content: Reference:
label: Description
content: Talbert Abrams, <I>Essentials of Aerial Surveying and Photo Interpretation</I>, New York: McGraw-Hill, 1944, pp. 218-244.
label: Location
content: Currently not on view
place: label: place made
content: United States: Michigan, Lansing
topic: label: Subject
content: Mathematics
label: Subject
content: Drafting, Engineering
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Single Drawing Instruments
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content: Science & Mathematics
creditLine: label: Credit Line
content: Gift of the University of Missouri - Columbia
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MA.333632
label: catalog number
content: 333632
label: accession number
content: 300659
objectType: label: Object Name
content: drawing instrument
physicalDescription: label: Physical Description
content: metal (parts material)
label: Physical Description
content: wood (case material)
label: Physical Description
content: paper (tag material)
label: Measurements
content: overall: 8.7 cm x 44 cm x 19.4 cm; 3 7/16 in x 17 5/16 in x 7 5/8 in