Help…my curiosity is getting the best of me!!! Some years ago a friend of mine, unfortunately dying of brain cancer, gave me this tool from Woodcraft. My friend’s disease was so advanced however that he could not speak clearly or write and was unable to tell me the purpose for this tool, gig or gauge. This constructed wooden thing is 10” long, 1 ½” tall and 7/8” wide with a cam operating lever at each end. Operating the levers at the end adjust the thin slots that are cut into the device. Perhaps one of you out in “wood-working” land knows what it is.