the proper way to measure roundness is with a dial and a fixture. .5mm variation is... ah... no offense intended, but you might as well be eyeballing a measuring tape from six feet away.Hmm? I better better get a digital micrometer so I can get the most accurate reading. My 10 cent analog tool obviously will not give me the accuracy I need. I just gave a range because it was just over 44.
What is the proper way to get an accurate reading?
Guessing take three or four readings... quarter turn of crank... take the readings again in the same areas... and do it until until all four sides are done? Then do it all again to double check.
I was getting the same reading then after twenty or so measurements I may have gotten sloppy. Again... cheap measuring tool which obviously lacks the accuracy.
Thank you for the guidance on who to use for the crank.
Warmer weather is coming in a week or two... so it would be nice to get the heart surgery done. The best way to social distance!
get thee to a machinist, I'd say.