📏 Electric Micrometer AC21 3022 by AccusizeTools Review

For the price this tool feels comfortable, accurate and well made. The action is fairly smooth and the repeatability is good, although I doubt I'll be using all (many) of the buttons. The only problem was the battery, which was completely dead upon arrival. Revain was kind enough to reimburse me for the time and effort to change the battery, so no problem in the end.

This micrometer is very accurate and repeatable. I'm not a machinist and I don't make money from this tool, so an expensive high-end mic won't be worth it for me. I use it to measure very important dimensions (stem and main pivot on a road bike) so accuracy and precision are important. The only complaint I have is that the buttons are tiny and easily accidentally pressed during use. For casual use where accuracy and precision is required, this is great.

I wanted to use this to accurately calibrate the extrusion width using the flow rate on my industrial 3D printer. I need an accuracy of +/- 0.001 mm. The measuring shaft rotates as it approaches the anvil. It sucks. The blue plastic behind the Accusize logo makes it look a bit like a kid's toy. I would prefer a very dark color or black, in fact any dark color will do. Naturally dark green, dark red, dark blue or black. But I don't care about the price. I only mention it because the…