Gordon
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- Jan 4, 2011
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I have a Lufkin #621 0-1" micrometer. It reads .001 under size. I cannot find any way to adjust this micrometer. No holes for a spanner type wrench or cap to release the spindle. It does not appear to have any separate pieces in the body which would allow adjustment. It looks like one solid piece. I cannot believe that it was built in one piece with no means of calibration. It has four slots in the top of the threaded portion which may be for some type of spanner but the threaded barrel does not appear to be separate from the body. The micrometer is probably older than I am. Any ideas?