Draft-Aid Designer's Template

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This clear plastic rectangular template has a scale of inches from 1 to five inches along the left side, divided to 1/32 inch. It has an unequal scale of degrees along the top and right side which can be used as a rectangular protractor. Cut out of the template are seven rows of figures. The first row has ten squares, ranging in size from 3/4 inch on a side down to 1/8 inch on a side. The next two rows have 19 circles ranging from 1/16 inch in diameter up to 1 inch in diameter. The fourth row has eight hexagons, the fifth row six rectangles, the seventh row an arrow and three ovals and the eighth row five equilateral triangles. In addition there is an arc of a circle, a star, two pointed figures, and an additional small circle.
The instrument fits in a tan paper envelope.
According to both a printed and a penciled mark on the object, it cost $1.00. The donor recalls that he purchased the device while he was working on as a free-lance programmer during his student days at Purdue University.
Currently not on view
date made
place made
United States
Physical Description
plastic (template material)
paper (envelope material)
overall: .1 cm x 20.2 cm x 13.3 cm; 1/32 in x 7 15/16 in x 5 1/4 in
ID Number
nonaccession number
catalog number
Credit Line
Gift of David A. Studebaker
Drafting, Engineering
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Drawing Templates
Data Source
National Museum of American History


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