What the heck is this?
A.J. Hamler
A friend, thinking that I know everything, asked me what this was. I'm clueless.

It's wedge-shaped --- the "front" is about 3/4" high, and the back is 1". Overall it's about 6-1/2" long. Made of aluminum.

The two pieces are exquisitely machined, and when you fit them together you can barely see the seam between the two. The wording stamped into the "front" is "F 23 R&L."
Anybody have a guess?
A.J.

