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US Patent: 356,892
Micrometer Depth Gage
Patentee:
Joseph B. Renshaw - Hartford, CT

USPTO Classifications:
33/542

Tool Categories:
metalworking tools : machinist tools : measuring tools : micrometer depth gages

Assignees:
None

Manufacturer:
Joseph B. Renshaw - Hartford, CT

Witnesses:
Albert H. Walker
George L. Risley

Patent Dates:
Applied: May 10, 1886
Granted: Feb. 01, 1887

Patent Pictures: [ 1 | 2 ]
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Martin J. Donnelly Antique Tools
Description:
This gage is to be used by machinists when making grooves or other recesses; and it may to beset to the depth of one recess and then be employed to determine when other recesses have reached the same depth; or it maybe set to vary one one-thousandth of an inch or any other number of thousandths of an inch from a particular depth, and then be employed to determine when other recesses have reached such variant depth.

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