This is a nice clean, 6" size firm-joint Hermaphrodite caliper marked "THE L.S. STARRETT CO. ATHOL MASS. U.S.A.". It's in very good working condition. Appearance is good with no rust, some very minor pitting, some minor discoloration, a few letters stamped on one side (619) noted. This one features the adjustable firm-joint, and scriber depth adjustment, in very good working condition. A good investment, since these are so hard to find!