Felsenthal FAO-44 Artillery Protractor

Description:

This clear plastic semicircular protractor is divided by twenties and marked by two hundreds from 0 to 3,200 and from 3,200 to 6,400. A pinhole is at the origin point. The interior is labeled: ANGULAR MILS; 8016738. This protractor was item no. FAO-44. Felsenthal Instruments Company manufactured it for the U.S. Army about 1958.

The Felsenthal Instruments Company was the leading supplier of mathematical instruments to the U.S. Army Air Force and the U.S. Navy Bureau of Aeronautics, particularly during World War II (when the firm was known as G. Felsenthal & Sons). After the company ceased operations in approximately 1976, it provided a large sample of its products to the Smithsonian.

See also 1977.1141.01, 1977.1141.02, 1977.1141.03, 1977.1141.05, 1977.1141.08, 1977.1141.09, 1977.1141.11, 1977.1141.12, 1977.1141.18, 1977.1141.19, 1977.1141.20, 1977.1141.21, 1977.1141.22, 1977.1141.23, 1977.1141.24, 1977.1141.30, and 1977.1141.39.

Date Made: ca 1958

Maker: Felsenthal

Location: Currently not on view

Place Made: United States: Illinois, Chicago

Subject: MathematicsProtractor

Subject:

See more items in: Medicine and Science: Mathematics, Science & Mathematics, Protractors

Exhibition:

Exhibition Location:

Credit Line: Gift of Ben Wharton Rau and Margery Felsenthal Rau

Data Source: National Museum of American History

Id Number: 1977.1141.10Accession Number: 1977.1141Catalog Number: 336394

Object Name: protractor

Physical Description: plastic (overall material)Measurements: overall: .2 cm x 15.2 cm x 8.3 cm; 3/32 in x 5 31/32 in x 3 9/32 in

Guid: http://n2t.net/ark:/65665/ng49ca746a7-25cb-704b-e053-15f76fa0b4fa

Record Id: nmah_904367

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