Adjusting a Lufkin 680A Inside Micrometer

replying to Randy, Dudy wrote: Does anyone have a copy of the instructions for adjusting the Lufkin 680a?

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Dudy
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I don't know that I do, but US Patent number 1,424,383 is the key.

Enter US1424383 to Google Patents to get a copy.

Joe Gwinn

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Joe Gwinn

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