sgkent
Lawn Addict
- Joined
- Sep 27, 2017
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- 1,695
yes, even heat from the hands expands it and makes the readings useless as to a precision tool. Some of the questions asked about crankshaft journals, things like that sometimes people don't realize how small the measurements are that are being measured. A standard sheet of 20 lb printer paper is about .004" thick. A standard mic will read down to .0001 and if you read between the lines, .00001 +/-. Of course that assumes its quality can hold that tolerance and that you have gauge blocks to verify the calibration.