Premium Outside Micrometer Set 0-4" / 0.0001" (0-1"/1-2"/2-3"/3-4") Precision Machinist Tools w/Carbide Tips, Standards, Ratchet Stop and Hard Carry Case

I bought these because I was getting the run around between my machinist and my parts supplier for an engine build. So I decided it was time to take the measurements for myself.These micrometers are still as accurate as any high priced brand. Ten thousandths of an inch is still ten thousandths of an inch, regardless of how much money you spend to get it.I would not suggest using the ratchet end to loosen the barrel for calibrating the tool. It can throw the ratcheting mechanism out. At which point I had to take mine apart and fix it, but resetting the internal alignment of the ratcheting pieces so they locked back in place inside the tube. But the design of the ratchet, the size of the teeth, and the tension of the spring allows for the proper tension to be applied to the adjustment of the micrometer when it makes contact with the surface of what you are measuring. So keep the ratchet in proper working order, just as with every other micrometer.

High quality measuring instruments. Exactly as described.

These mics are a great value. I would not use them to create parts for someone else, but they are fine for the work I do. After adjusting them to the standard bars sent with the kit, I compared them to my Mitutoyo calipers and even some cheapie Harbor Freight digital calipers by measuring feeler gauges. The mics (well, the 0 to 1" mic) are right on the button. But even the cheap calipers are within .0005.

Micrometer work as they should.

Nice quality and very fast shipping