Object Details
- Illinois Tool Works Inc.
- Description
- In the mid-twentieth century, American tool manufacturers sometimes distributed trigonometry tables that included advertisements for their products. This small paper pamphlet includes definitions of the sine, cosine, tangent, cotangent, secant and cosecant as well as formulas for finding the length of sides for right-angled and oblique triangles when different angles and sides are known. It then gives tables to five places of values of the six trigonometric functions mentioned, as well as a table of decimal equivalents. Also shown are precision metal cutting tools and Shakeproof screws, washers, and fasteners.
- The pamphlet was owned by machinist and museum specialist George A. Norton. A mark on the first page inside the cover reads: WWII. This suggests the date.
- Compare 1986.3078.02.
- Location
- Currently not on view
- Credit Line
- Gift of George A. Norton
- 1940s
- ID Number
- 1986.3078.01
- nonaccession number
- 1986.3078
- catalog number
- 1986.3078.01
- Object Name
- Pamphlet
- Physical Description
- paper (overall material)
- Measurements
- overall: .5 cm x 7.8 cm x 16.5 cm; 3/16 in x 3 1/16 in x 6 1/2 in
- place made
- United States: Illinois, Chicago
- See more items in
- Medicine and Science: Mathematics
- Trigonometry
- Science & Mathematics
- National Museum of American History
- subject
- Mathematics
- Record ID
- nmah_905182
- GUID (Link to Original Record)
- http://n2t.net/ark:/65665/ng49ca746a7-323c-704b-e053-15f76fa0b4fa
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