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US Patent: 215,041
Micrometer Gage
Eugene A. Bourquin - New York, NY

USPTO Classifications:

Tool Categories:
metalworking tools : machinist tools : measuring tools : micrometers


Not known to have been produced

William G. Mott
George T. Pinckney

Patent Dates:
Applied: Mar. 22, 1879
Granted: May 06, 1879

Patent Pictures:
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I denominate my device the " Universal Micrometer," as it is adapted to the varying uses of watch-makers, machinists, and others; and by it the diameter of a wire, arbor, pinion wheel, or similar article can be measured; the distance from one center or pivot to another measured, the width of gear-teeth and the intermediate spaces, the thickness of a watch glass or case, or the convexity of the same, or the thickness of a lens or similar article can be determined; gearing can be mounted, and the distance between centers measured; and the micrometer becomes a very delicate depthing tool, and the distance can be marked by the micrometer on a plate as well as being denoted in figures.

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