Quote Originally Posted by UKRob View Post
Well in that case, I'll continue to rely on my thumb pad test - it's the one I automatically use before any other - and the one that tells me when to put the hones away.
Well, some of us have to work on calibrating our thumb pads.

Or for those in the position I'm in, with the calloused and dead nerve endings of a mechanic, calibrating that soft meat between the thumb knuckle and joint that can still feel things.

We still need our magnification.