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Image
Has Image
3
Non-Commercial Use
3
Category
Mathematics
3
Maker
Adams, George
1
Brooklyn Arms Company
1
George Adams
1
Stanley, William Ford
1
William Ford Stanley
1
Object type
combined scale protractor
3
drawing instrument
3
drawing instrument; combined scale protractor; parallel rule
2
parallel rule
2
drawing instrument; combined scale protractor
1
Place
London
2
London, England, United Kingdom
1
London, Greater London, England, United Kingdom; Great Turnstile
1
New York
1
New York city, United States
1
Material
brass (copper, zinc alloy)
1
ivory
1
Date
From
To
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Protractor and parallel rule combined
1740-1750
Parallel rule and protractor with index arm
1865-1875
Protractor scale
1876
