25-02-2019, 01:04 AM
Claimed accuracy of new ext mics is often +- .0001 inch. When an internal mike also involved, tolerance is large cf the fits of rolling bearings.
Actual accuracy usually less. Those with mics just close without looking at scale. Record. Repeat several times. Release and repeat much later. Unlikley all readings within a range of .0002. Beyond zero inherent thread errors etc add.
Actual accuracy usually less. Those with mics just close without looking at scale. Record. Repeat several times. Release and repeat much later. Unlikley all readings within a range of .0002. Beyond zero inherent thread errors etc add.