Post 940 Beam Compass
date: label: date made
content: 1944-1970
name: label: maker
content: Frederick Post Co.
notes: label: Description
content: This metal instrument has two I-shaped beams, one 13" long and one 7" long. Needle, pencil, and pen points are moved along a beam by rolling wheels at the top of the trammels. The trammels are each marked with the logo for the Frederick Post Company that was in use from 1944 until 1970 and with the word ERA. A cardboard box covered with black imitation leather holds the objects. The box has two empty 2" slots. The end of the box has a red and white Post label with the model number 940. According to a Post catalog, purchasers could also choose beams as long as 26", 38", 50", 62", 74", 86", and 100".
label: Description
content: Reference: Frederick W. Post Company, <i>Dependable Drawing Materials</i>, 19th ed. (Chicago, 1950), 61.
label: Location
content: Currently not on view
place: label: place made
content: United States: Illinois, Chicago
topic: label: Subject
content: Mathematics
label: Subject
content: Drawing Instruments
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Science & Mathematics
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content: Dividers and Compasses
creditLine: label: Credit Line
content: Gift of Alice W. Smith
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1990.0317.01
label: accession number
content: 1990.0317
label: catalog number
content: 1990.0317.01
objectType: label: Object Name
content: beam compass
physicalDescription: label: Physical Description
content: steel (overall material)
label: Physical Description
content: cardboard (overall material)
label: Physical Description
content: aluminum or aluminum alloy (overall material)
label: Measurements
content: overall: 33.6 cm x 7.5 cm x 2.1 cm; 13 7/32 in x 2 15/16 in x 13/16 in