Honestly,, 0.1mm = 0.0039"
I won't touch the digital. Some, as mentioned flatten batteries in no time flat.
I just bought some cheap calipers, dial, metric, off ebay. Ummm, I think abt $25
I check them occasionally, always spot on.
We are not sending man to the moon. We are making ammo.
Unless your into long range competition $50 to $100 will be fine.
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