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US Patent: 3,688,412
Square Gage
William E. Keener - Birmingham, MI

USPTO Classifications:
33/474, 33/535

Tool Categories:
layout tools : squares : try squares
layout tools : measurement gauges


Not known to have been produced

none listed

Patent Dates:
Applied: Aug. 31, 1970
Granted: Sep. 05, 1972

Patent Pictures:
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Raymond E. Scott - patent attorney


This disclosure relates to a toolmaker's square gage or try square and is adapted to indicate the deviation from square of two surfaces of a part. The square gage includes a horizontal beam having a fulcrum point or edge adjacent one end, a fixed upwardly extending gage post secured to the beam, in fixed relation, and a feeler gage secured to the beam, spaced from the post. The gage includes a gage feeler or plunger which engages the supporting surface of the gage and a dial indicator which indicates the linear movement of the feeler; such that the gage reading is proportional to the angle of inclination of the gage post, as it is tilted to engage the part, relative to a predetermined standard

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