Help us ID this tool

[cdowns]

Originally Posted by papawswrench

I don't think it can be a thread chaser because the toothed cutter blade doesn't line up perpendicular to whatever you clamp in it, nor is it anywhere near the angle it would need to be to chase pipe threads, and how would you turn the tool if the pipe were clamped in it?
I appreciate the guesses, even the wild ones!

well the part that you're thinking off as a clamp has no serrations indicating to me that it is just being used as a centering devise and it in fact should be loose to allow centering alignment and rotation/ and the bolt originally holding the cutting die would hane been a shouldered bolt to allow the die to self align with the pipe threads then having the adjusting screw backed off it would self tension the cutter against the pipewith the handle stightly tilted upward rotate around pipe clean and deburr the threads// if youve got pipe laying around see if the cutter matches the pipe thread i'll bet it does