Keuffel & Esser 1392P Open Divided Scale
date: label: date made
content: 1949–1962
name: label: maker
content: Keuffel & Esser Co.
notes: label: Description
content: This 13" boxwood scale rule has a white celluloid coating along both long edges. The top edge has scales for 1" and 1/2" to the foot. Between these scales is a scale divided to 1/2", numbered from left to right by ones from 1 to 11, and numbered from right to left by ones from 0 to 21. 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 96, and numbered from right to left by twos from 0 to 48. The middle of the rule is marked: PARAGON 1392P K+E KEUFFEL & ESSER CO. The back of the rule is marked: D. B.
label: Description
content: Keuffel & Esser of New York City began using the logo shown on this object in 1943, but did not start printing it on instruments until 1949. That year, model 1392P sold for $4.00. The company changed its model numbers in 1962.
label: Description
content: Isaac Giacinto Molella, who worked as an electrical engineer for General Electric in the United States, North Africa, and Europe in the 1950s, owned this scale. Presumably he acquired it secondhand from someone with the initials D.B.
label: Description
content: References: <i>Catalogue of Keuffel & Esser Co.</i>, 40th ed. (New York, 1944), 128; <i>K+E Price List</i>, 41st ed. (New York, 1949); <i>Catalogue of Keuffel & Esser Co.</i>, 42nd ed. (New York, 1954), 180.
label: Location
content: Currently not on view
place: label: place made
content: United States: New York, New York City
topic: label: Subject
content: Mathematics
label: Subject
content: Drafting, Engineering
label: Subject
content: Rule, Measuring
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: In Memory of Isaac Giacinto Molella
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1992.0433.04
label: accession number
content: 1992.0433
label: catalog number
content: 1992.0433.04
objectType: label: Object Name
content: scale rule
label: Object Name
content: scale
physicalDescription: label: Physical Description
content: boxwood (overall material)
label: Physical Description
content: celluloid (overall material)
label: Measurements
content: overall: 33.6 cm x 3.5 cm x 4 cm; 13 7/32 in x 1 3/8 in x 1 9/16 in