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US Patent: 65,631
Improvement in Combination Squares
Patentee: D. A. B. Bailey (exact or similar names) - 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 (New site tip) Google Patents Report data errors or omissions to steward Ralph Brendler
Description: This combination square features a triangular head with a built-in protractor and calipers.

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