The ferrules are slightly different between the two. I wondered at
first if they were the same tool or not :)
The latest version seems to have a bit of cloth or something stuck in
between the cutter and handle. Might provide some clue if the current
owner can't account for it being there...
Yes, I was also thinking it was for cutting leather but the two outer pieces
seem better suited to use with a plank of wood. Though if it is a scribe I
don't know why there is a blade and not just a nail-like marker. I just
added the leather cutter theory to my answer for this one.
I don't see why it has two sides. Unless you have very nicely planed
wood indeed it's either going to be a bit sloppy or bind on a wide bit.
Mortise marker gauges are "one sided" and I can't see why this isn't.
Looking at the photos the guides seem to be round not straight sided - I
wonder if they were intended to run in grooves on some sort of jig
that's been lost.
2717: Well, red can mean hydrogen and yellow chlorine. Patent #4070861
was for a reactor using hydrogen and chlorine for propulsion or
electrical generation. Oxygen, perhaps air, was added to control the
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