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US Patent: 65,631
Improvement in Combination Squares
Patentee:
D. A. B. Bailey - St. Johnsbury, VT

USPTO Classifications:
33/472, 33/558.4

Tool Categories:
layout tools : squares
layout tools : protractors
layout tools : calipers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
W. N. Randall
Sias Randall, II
Theo. Fische
J. A. Service

Patent Dates:
Granted: Jun. 11, 1867

Patent Pictures:
USPTO pdf tiff
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Description:
This combination square features a triangular head with a built-in protractor and calipers.

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