Object Details
- Felsenthal
- 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.
- Location
- Currently not on view
- Credit Line
- Gift of Ben Wharton Rau and Margery Felsenthal Rau
- ca 1958
- ID Number
- 1977.1141.10
- accession number
- 1977.1141
- catalog 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
- place made
- United States: Illinois, Chicago
- See more items in
- Medicine and Science: Mathematics
- Science & Mathematics
- Protractors
- National Museum of American History
- Subject
- Mathematics
- Protractor
- Record ID
- nmah_904367
- GUID (Link to Original Record)
- https://n2t.net/ark:/65665/ng49ca746a7-25cb-704b-e053-15f76fa0b4fa
