What is it?

My friend Angelica over at the famed Swapatorium blogspot sometimes posts strange objects and asks people to identify their use. I found the piece below at the DAV the other day and it had me stumped. Compass? Discus? What do think? I'll give a prize for the correct answer AND the most creative answer.

I'll take guesses until someone gets it right and I'll take creative answers until Wednesday, March 16.

Bon chance!

(The prize you ask? Something fantastic of course.)