Dave H (MI)
Well-known Member
The last collection I bought had two cardboard boxes along with the toolbox. In one of them was this thing. It's companions in the box were a large and a small surface gage. SOMETIMES people group things that are used together, so maybe that helps. This item is 7 1/4 inches high for reference. All hardware is steel EXCEPT the large knurled horizontal adjustment nut although the threaded part of that nut is steel. The base is steel and very heavy. The upright part is non ferrous and contains copper based on a small area of green oxidation. The large knurled nut is the same material. The vertical hardware moves the top of the unit up and down on two pins by turning the smaller knurled nut. I have some vague ideas of what goes on with some of the parts but the complete function and purpose of this unit eludes me. For example, I have an idea that the horizontal adjustment is a clamp and I have a guess what it clamps. Why it clamps it and the reason for the up and down adjustment, is a mystery. This is a well machined and beautifully aged piece...hoping we can figure it out. No visible maker marks.