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Patterns for Models in Spherical Trigonometry

Patterns for Models in Spherical Trigonometry

This folder includes patterns and drawings for:
Polar Triangles and Quadrantal Arc - PT, QAR - May 14, 1945
Miniature Polar Triangle - PTh - half-size - April 15, 1945
Intersecting Polar Triangles - IPT - April 17, 1945
Intersecting Polar Triangles, half size - IPTh - April 16 - 1945
Currently not on view
Object Name
Sheets and Patterns
date made
associated dates
1945 01 25 / 1945 01 25, 1945 04 17 / 1945 04 17
Wheeler, Albert Harry
Wheeler, Albert Harry
associated place
United States: Massachusetts, Worcester
Physical Description
paper (overall material)
metal (overall material)
tan (overall color)
silver (overall color)
average spatial: 21.5 cm x 31 cm x 15 cm; 8 15/32 in x 12 7/32 in x 5 29/32 in
ID Number
catalog number
nonaccession number
Credit Line
Gift of Louise D. Campbell
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Spherical Trigonometry
Data Source
National Museum of American History
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