I picked this up a while ago, but am no closer to learning anything about it. It says "Pull Back" but nothing moves. Three detent depressions on the side of the hex shaft. "Made in U.S.A. Pat Pend," "Master Micro," and "Pull Back" are all I can find besides somebody's scratched in "XMTT" on the handle.
It's heavy and seems well made.
Anybody know this one?