Stanley Folding Rule with Caliper
date: label: date made
content: ca 1892
name: label: maker
content: Stanley Works
notes: label: Description
content: This four-fold boxwood rule has a brass arch joint at the center and two brass hinges. Unfolded, it measures 31.2 cm W x 1.2 cm D x 0.5 cm H. Both sides are marked: N<u>o</u> 32. The scales on both sides are numbered by ones from 11 to 1. On one side, the rule is divided to 1/16" along the top edge and to 1/12" along the bottom edge.
label: Description
content: The other side is divided to 1/8" along the top edge and to 1/10" along the bottom edge. A brass caliper slides out from the right end of the rule. Both sides are divided to 1/16" and marked: 1, 3/4, 1/2, 1/4. The underside and the slot in the rule are also marked: 58. The divisions are all roughly made; the instrument does not appear to be machine-divided.
label: Description
content: The Stanley Rule & Level Company of New Britain, Conn., offered model number 32 from 1859 to 1941. The shape of caliper jaw found on this instrument was introduced between 1888 and 1892. An illustration from a 1919 Stanley catalog indicates that the company name was stamped on the ruler by that time. A similar folding pocket rule with caliper is advertised as model number 1752 in <i>Catalog of Eugene Dietzgen Co.</i>, 7th ed. (Chicago, 1904), 167. Its price was 60¢. The Department of Entomology at the National Museum of Natural History used this rule to study its collections.
label: Description
content: Reference: Philip E. Stanley, <i>Boxwood & Ivory: Stanley Traditional Rules, 1855–1975</i> (Westborough, Mass.: Stanley Publishing Company, 1984), 95–96.
label: Location
content: Currently not on view
place: label: place made
content: United States: Connecticut, New Britain
topic: label: Subject
content: Mathematics
label: Subject
content: Rule, Measuring
label: Subject
content: Carpentry
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: Transfer from National Museum of Natural History, Department of Entomology
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1990.0099.01
label: accession number
content: 1990.0099
label: catalog number
content: 1990.0099.01
objectType: label: Object Name
content: rule
label: Object Name
content: scale rule, folding, with caliper
physicalDescription: label: Physical Description
content: brass (overall material)
label: Physical Description
content: boxwood (overall material)
label: Measurements
content: overall: 1 cm x 8.6 cm x 2.8 cm; 13/32 in x 3 3/8 in x 1 3/32 in