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US Patent: 1,810,710
Gauge
Patentee:
Carl Edvard Johansson - Detroit, MI

USPTO Classifications:
33/501.4

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Apr. 12, 1923
Granted: Jun. 16, 1931

Patent Pictures:
USPTO pdf tiff
Google Patents
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Description:
This gauge simultaneously provides coarse and fine readings.

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