Quote Originally Posted by Mike Haas View Post
Verry strange....
I used to have one of these. Its thr optical portion of a sighting assembly for a heavy weapon. Adjustments are provided thru the base or bracket. The reticle is most likely a mil scale etched on glass and designed to be illuminated thru a little window on the tube.

Its just a coincidence that it fits standard 7/8" rings.

Regards,

Jim