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US Patent: 1,424,383
Micrometer Gauge
Adjustable Micrometer
Patentee:
John A. Schleicher (exact or similar names) - Saginaw, MI

USPTO Classifications:
33/816

Tool Categories:
layout tools : measurement gauges

Assignees:
Lufkin Rule Co. - Saginaw, MI

Manufacturer:
Lufkin Rule Co. - Saginaw, MI

Witnesses:
Unknown

Patent Dates:
Applied: Nov. 21, 1921
Granted: Aug. 01, 1922

Patent Pictures:
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Report data errors or omissions to steward Ralph Brendler
Description:
This micrometer features a rotating sleeve to allow the zero point to be easily adjusted.

This feature was used on most Lufkin micrometers, and was later adopted by many other manufacturers.

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