US Patent: 1,424,383
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Micrometer Gauge Adjustable Micrometer
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Patentee:
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John A. Schleicher (exact or similar names) - Saginaw, MI |
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Patent Dates:
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Applied: |
Nov. 21, 1921 |
Granted: |
Aug. 01, 1922 |
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Ralph Brendler
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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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