all our gauges have a calibration frequency and need to be calibrated like once a year.
Automotive seating industry. using some thread gauges to check nuts and stud thread. Like M6X1 M8X1.25 M10X1.5 and 7/16 20 standard threads.
Can I use the shadowgraph and Mylar to calibrate the thread gauge? I think this is much easier and faster than 3 wire method.
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