Bruning 2090P Open Divided Scale
date: label: date made
content: after 1952
name: label: maker
content: Charles Bruning Company
notes: label: Description
content: This white and orange plastic rule has scales for 1/2" and 1" to the foot along its top edge on the front side. Between these scales is a scale divided to 1/2", numbered from left to right by twos from 0 to 8, and numbered from right to left by ones from 0 to 4. The bottom edge has scales for 1/8" and 1/4" to the foot. Between these scales is a scale divided to 1/8", numbered from left to right by fours from 0 to 44, and numbered from right to left by twos from 0 to 22. The top edge is marked: BRUNING 2090P. It is also marked: MADE IN U.S.A.
label: Description
content: On the back, the top edge has scales for 3/8" and 3/4" to the foot. Between these scales is a scale divided to 3/8", numbered from left to right by twos from 0 to [1]2, and numbered from right to left by ones from 0 to 6. The bottom edge has scales for 1-1/2" and 3" to the foot. A brown leather sheath is marked: BRUNING.
label: Description
content: Charles Bruning (1866–1931) was born in Denmark and immigrated to the United States. In Chicago during the 1890s, he became interested in the blue print business. In 1897, he set up his own blue printing company in Manhattan, which was incorporated as the New York Blue Print Paper Company in 1901. Around 1920 he purchased American Blue Print Company of Chicago, and the combined firms became known as the Charles Bruning Company, Inc.
label: Description
content: By 1936, the firm was offering model 2090 in boxwood and with plastic edges over boxwood. It began to make the rule from molded plastic in 1948, but it did not give the rule model number 2090P until 1952, when the rule sold for $1.80. According to the donor, the instrument was used by her husband, the electrical engineer Robert H. Wieler (1923–1993). For other open divided or chain scales, see 1998.0032.08, 1981.0933.14, 1981.0933.15, and 1992.0433.04.
label: Description
content: References: "Charles Bruning," <i>New York Times</i> (January 31, 1931), 14; Charles Bruning Company, Inc., <i>General Catalog</i>, 12th ed. (New York, 1936), 120; Charles Bruning Company, Inc., <i>General Catalog</i>, 14th ed. (New York, [1948]), 88; Charles Bruning Company, Inc., <i>General Catalog</i>, 15th ed. (Teterboro, N.J., and Chicago, 1952), 115; accession file.
label: Location
content: Currently not on view
place: label: place made
content: United States: Illinois, Chicago
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: Science & Mathematics
label: See more items in
content: Scale Rules
creditLine: label: Credit Line
content: Gift of Norma P. Wieler
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1998.0032.09
label: catalog number
content: 1998.0032.09
label: accession number
content: 1998.0332
objectType: label: Object Name
content: scale rule
label: Object Name
content: rule
physicalDescription: label: Physical Description
content: plastic (overall material)
label: Physical Description
content: leather (overall material)
label: Measurements
content: overall: 1 cm x 8 cm x 3.5 cm; 13/32 in x 3 5/32 in x 1 3/8 in