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US Patent: 98,504
Improvement in Gauge and Dividers
George Kenny - Nashua, NH

USPTO Classifications:
33/44, 33/669

Tool Categories:
layout tools : marking gauges
layout tools : marking gauges : center marking gauges



Carrol D. Wright
Austin S. Howarth
M. S.G. Wilde

Patent Dates:
Granted: Jan. 04, 1870

Patent Pictures: [ 1 | 2 ]
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This patent features a fairly traditional marking gage with a "divider" gage that could automatically mark a mortise and its centerline. This in and of itself was interesting enough, but the actual piece produced went several steps further...

In addition to the marking gage and dividers covered in the original patent, the production models added a second head, and another marking point in the middle of the bar. On top of all this, they stuck long points in the bottom of each head so the tool could be used as a trammel.

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