Exploratorium Pi Pin
What better way to remember Pi Day than with this tiny but mighty accessory? Show your true style by sprucing up your collar, adding a bit of flair to your cap, or making that jacket a true one of a kind. The limit is only your imagination.
Originally designed by Jim Clift, each piece is hand cast from lead-free fine pewter.
Size: 1/2" x 1/2".
Made in the USA