Plotting Scale Signed Gebr. Wichmann
date: label: date made
content: early 20th century
name: label: maker
content: Gebr. Wichmann
notes: label: Description
content: On one side this silver-colored metal rule has a 16-cm plotting scale with diagonal scales at each end (graduated to 5 mm and to 1 mm). The plotting scale is divided to centimeters. It is numbered along one edge by hundreds from 0 to 300 (representing a scale drawing at a proportion of 1 cm to 2,000 meters) and along the other edge by twenties from 10 to 150 (representing a scale of 1:1,000). The right end is marked: GEBR. WICHMANN BERLIN.
label: Description
content: The other side has another 16-cm plotting scale with diagonal scales at each end (graduated to 4 mm and to 2 mm). The plotting scale is divided to two centimeters. It is numbered along one edge by hundreds from 0 to 400 (representing a scale of 1:2,500) and along the other edge by hundreds from 0 to 800 (representing a scale of 1:5,000). A cardboard case is covered with black leather and lined with dark blue velvet. The case is marked: GEBR. WICHMANN BERLIN.
label: Description
content: Gebr. Wichmann (Wichmann Brothers) was founded in Berlin in 1873 and continues to distribute office and technology products. Ernst Emil Herzfeld (1879–1948) is believed to have used this scale on archaeological expeditions and excavations in the Middle East between 1903 and 1936.
label: Description
content: References: Gebr. Wichmann, "Wir über uns," http://www.wichmann.de/fip_Ueber_uns-30.html; accession file.
label: Location
content: Currently not on view
place: label: place made
content: Germany: Berlin, Berlin
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 Ernst Emil Herzfeld
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1980.0095.01
label: accession number
content: 1980.0095
label: catalog number
content: 1980.0095.01
objectType: label: Object Name
content: rule
label: Object Name
content: scale rule
physicalDescription: label: Physical Description
content: cardboard (overall material)
label: Physical Description
content: metal (overall material)
label: Physical Description
content: velvet (overall material)
label: Measurements
content: overall: 1.2 cm x 26.4 cm x 7.7 cm; 15/32 in x 10 13/32 in x 3 1/32 in