It's most of a Belsaw key cutting machine minus the arbor shaft, drive pulley and the milling cutter. It bears some resemblance to my scissors and pinking shear machine in some ways. Part of it is the business end of a micrometer which could give it a good level of potential accuracy. I'm kind of thinking in terms of repeatable profiles based on hand cut patterns. Only time will tell but the concept should be fun to play with.
.