I got this clamp with a box of stuff at a garage sale last year and cleaned it up a little. The original cup was missing. THe one in the pictures is not a perfect fit but came from a machine leveling foot. I cleaned it up and painted it with hammered silver finish. Just guessing original color may have been the standard orange but original paint was all gone when I got this one. I believe the part number is 39. Can anyone tell me what this one was used for as I am unfamiliar? It stands roughly 16 inches tall and is adjustable like the standard bar clamps are.