Waiting on a reply-interesting anywayClearly some sort of fine adjustment screw. Sort of looks like the one I have for my bandsaw fence. You might send the photo to Lee Valley and ask them. I bet they'd identify it in short order.
Large brass screw at the top will pinch whatever goes in the slot just barely visible on the side of the body. We tried a blade from a adjustable square, maybe. Didn't see how that would work.My guess is it is a stop with fine adjustment screw for repetitive cuts . Can't tell from that picture how it would be attached to a fence though.
Ed put me on the trail. Credit where due.I think Jim is right!
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