Drafting Scale Rule
date: label: date made
content: ca 1900
notes: label: Description
content: This wooden rule has eight scales for making scale drawings. On one side, scales for 1-1/2" = 1' and 3" = 1' are along the top. Scales for 3/8" = 1' and 3/4" = 1' are along the bottom. On the other side, scales for 1/2" = 1' and 1" = 1' are along the top. Along the bottom are scales for 1/8" = 1' and 1/4" = 1'.
label: Description
content: The interior on both sides is marked: E. D. L. JR. for the previous owner of the rule, Erasmus Darwin Leavitt Jr. (1836–1916), the renowned American mechanical engineer and designer of steam engines.
label: Location
content: Currently not on view
place: label: place made
content: United States
topic: label: Subject
content: Mathematics
label: Subject
content: Drafting, Engineering
setName: label: See more items in
content: Medicine and Science: Mathematics
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content: Science & Mathematics
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content: Scale Rules
creditLine: label: Credit Line
content: Gift of Margaret van D. Rice
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1977.0460.03
label: accession number
content: 1977.0460
label: catalog number
content: 336074
objectType: label: Object Name
content: rule
label: Object Name
content: scale rule
physicalDescription: label: Physical Description
content: wood (overall material)
label: Measurements
content: overall: .3 cm x 32.2 cm x 3.2 cm; 1/8 in x 12 11/16 in x 1 1/4 in