A set of mics would be ideal, but a good dial caliper is one of the most valuable tools you can get. Measures inside, outside, and depth. Digital, with three or four digit resolution can do it too, but i prefer my analog dial. (I do have a digital, but i find the battery dead quite often when i try to use it.)
I used to have a nice set of Mics but didn't use them for years, eyes have gone south , even with glasses and couldn't read them anymore. Guess I make a trip to HF. SO you think this crank could be STD ?
