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US Patent: 447,475
Drill and Tap Scale
Patentee:
Bennard H. Pomeroy (exact or similar names) - New York, NY

USPTO Classifications:
33/201, 33/555.2

Tool Categories:
gauges

Assignees:
Pomeroy Machine Co. - Brooklyn, NY

Manufacturer:
Not known to have been produced

Witnesses:
E. T. Thomas
Wm. E. Johnson

Patent Dates:
Applied: Jan. 27, 1891
Granted: Mar. 03, 1891

Patent Pictures: [ 1 | 2 ]
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Description:
Either linear or circular scale which includes tap size, tap drill size, clearance drill size, and a tapering scale for use in determining drill size.

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