I did the calculations one day. Screwing the die in as far as the second hand moves in a single tic (that would be six degrees) will set the shoulder further back by little tiny bit more than 0.001". That's not much turn at all when you're thinking you'd like to keep from pushing the shoulder any more than two or three thousandths.

Don't be the darkness.

America will perish while those who should be standing guard are satisfying their lusts.