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US Patent: 230,127
Carpenter's Gage
Patentee:
Wilbur Goodwin - Boston, MA

USPTO Classifications:
33/27.032, 33/44

Tool Categories:
layout tools : marking gauges
layout tools : compasses : trammels

Assignees:
Wilbur Goodwin - Boston, MA
David Huston - Boston, MA

Manufacturer:
Not known to have been produced

Witnesses:
P. E. Teschemacher
W. J. Cambridge
J. Q. Godfrey

Patent Dates:
Applied: Apr. 21, 1880
Granted: Jul. 20, 1880

Patent Pictures:
USPTO pdf tiff
Google Patents
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Description:
A simple combination gage, combining a marking gage and a scribing compass. The compass functionality was added by sticking pins in the top of the head and the bar. How you would use this tool as a standard marking gage without impaling your hand on the pin on top of the head is not covered in the patent papers...

Also of interest on this patent (but not explicitly claimed) is the adjustable point, held in place by a screw in the end of the bar. My guess is that the original papers tried to claim this feature but it was rejected.

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