Dietzgen 967A Beam Compass
date: label: date made
content: ca 1938
name: label: maker
content: Ecobra
notes: label: Description
content: This steel instrument is plated with chromium and stored in a leatherette pocketbook case lined with purple velvet. The inside of the flap is marked: DIETZGEN. The back of the case is marked: GERMANY. The beam compass consists of a solid tubular beam, 13" long and 3/16" in diameter; a second solid tubular beam, 6" long and 3/16" in diameter; a coupling for joining the beams with a thumbscrew; a needle point with a micrometer adjustment; a second needle point; a pencil point; a pen point; and a cylindrical case holding one extra lead and two additional needles. The handles on the points are cylindrical with a honeycomb pattern. The thumbscrew on the needle point with micrometer is marked: DIETZGEN GERMANY.
label: Description
content: The Eugene Dietzgen Co., a Chicago manufacturer and retailer of mathematical instruments, advertised the model 967A "Champion" brand beam compass and case in the late 1930s for $8.50. Dietzgen may have purchased instruments in the Champion line from Bayerische Reisszeugfabrik, a company in Nuremberg, Germany, that was owned by Joseph Dietzgen and made ECOBRA brand slide rules. See 1984.1071.04.
label: Description
content: References: <i>Catalog of Eugene Dietzgen Co.</i>, 15th ed. (Chicago, 1938), 141; <i>Dietzgen Essential Drawing Instruments and Materials</i>, cat. no. 38A (Chicago, [1939]), 11.
label: Location
content: Currently not on view
place: label: place made
content: Germany: Bavaria, Nuremberg
topic: label: Subject
content: Mathematics
label: Subject
content: Drawing Instruments
setName: label: See more items in
content: Medicine and Science: Mathematics
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content: Science & Mathematics
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content: Dividers and Compasses
creditLine: label: Credit Line
content: Gift of Sebastian J. Tralongo
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1984.1071.02
label: accession number
content: 1984.1071
label: catalog number
content: 1984.1071.02
objectType: label: Object Name
content: beam compass
physicalDescription: label: Physical Description
content: chromium (overall material)
label: Physical Description
content: leather (overall material)
label: Physical Description
content: velvet (overall material)
label: Physical Description
content: steel (overall material)
label: Measurements
content: overall: 34.7 cm x 6.1 cm x 2 cm; 13 21/32 in x 2 13/32 in x 25/32 in