http://home.comcast.net/~bobengelhardt/WhatIsIt.JPG

It's about 5" long. The shaft on the left looks like it is meant to be
chucked in a hand drill. The bar protruding on the right reciprocates,
with a 7/16" stroke, protruding a maximum of 1/8". The body is very
sturdy, maybe cast iron.

"Keesling" did not Google.

Thanks,
Bob