JPG wrote:Step gauge? Flatness gauge?
Most likely for measuring the amount of "set" in a saw blade or checking for alignment of carbide teeth etc.
BTW, the disk "sander" and table are I'm pretty sure designed for sharpening instead of woodworking (though it should work fine). I have a Belsaw heavy cast planer blade holder that runs in a table slot like that. The Belsaw "abrasive belt grinder" was sold as usable for sharpening circle saw blades (not carbide) by getting the blade in position and marking the table with chalk or clamping stop blocks to the table.
I did not equip with Shopsmiths in spite of the setups but because of them.
1 1988 - Mark V 510 (bought new), 4 Poly vee 1 1/8th HP Mark V's, Mark VII, 1 Mark V Mini, 1 Frankensmith, 1 10-ER, 1 Mark V Push-me-Pull-me Drillpress, SS bandsaw, belt sander, jointer, jigsaw, shaper attach, mortising attach, TS-3650 Rigid tablesaw, RAS, 6" long bed jointer, Foley/Belsaw Planer/molder/ripsaw, 1" sander, oscillating spindle/belt sander, Scroll saw, Woodmizer sawmill