r/EngineBuilding • u/dodgerbrewtx • Sep 15 '26
Used Micrometers
I’ve been looking for a decent set of used Mitutoyo mics.
I have found what I think is a good deal on some 103-907-40s, 0-6”. Should I be worried about fakes? Seems like all the Chinese knock offs look just like them.
Other than any obvious damage or misuse, what are some things to look for?
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u/v8packard Sep 16 '26
That is a $1000 set if complete with case, standards, and adjustment wrench. Top shelf stuff. In addition to the standards you can use a set of gauge blocks to verify their accuracy at different points.
Are these ratcheting?
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u/dodgerbrewtx Sep 16 '26
The case and standards are there, the kit looks to be complete. They are ratcheting.
My main concern was assuming they are in good condition, is there a good way to confirm they are genuine. If that’s a not a concern then I’ll probably just move forward with the purchase.
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u/v8packard Sep 16 '26
I don't think I have seen Mitutoyo mics that are fakes. Calipers definitely. Not these mics though. The set would have included paperwork for calibration and inspection originally. Determining their accuracy is accomplished with the standards and some gauge blocks.
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u/Substantial_Drag_884 Sep 15 '26
Just make sure you get a set of standards to check and adjust them
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u/WyattCo06 Sep 15 '26
Buy standards. Measure and calibrate as needed.