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US Patent: 375,901
Surface and Scratch Gage
William H. Stedman - Norwich, CT

USPTO Classifications:
33/32.2, 33/42

Tool Categories:
layout tools : marking gauges
layout tools : measurement gauges : surface gauges


Not known to have been produced

Frank H. Allen
George B. Kimball
Allen Tenny

Patent Dates:
Applied: Sep. 01, 1887
Granted: Jan. 03, 1888

Patent Pictures:
USPTO pdf tiff
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Here is another combination surface gage and machinist's scratch gage, much like the Walker patent (359336), but with a different kind of adjusting mechanism. This piece is still micro-adjustable, but here the adjuster is continuously variable. This seems like an excellent enhancement, and would have worked quite well.

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