I am very happy to have stopped drinking alcohol what must be now four months ago, and have no desire to restart, and am careful what I think about (o...

The "prism constant" per se, for the unit shown in the OP, is described on page 1-14 of the attached manual. Note that the height of the prism to the ...

Karen.

@holy-cow?ÿ

Looks like one of Kent's paintings.

@nate-the-surveyor?ÿ Nay forget ya signage:

@john-putnam?ÿ I think it's because, as Bill has pointed out in this and other threads, a "pin finder" is a magneticogizzmo that reacts to the magnet...

@williwaw?ÿ That reminds me, I need to calibrate my pace.