The overall length of this old ringsizer is 11". Inscribed on the ferrel portion of the metal base is:" U.S. STANDARD, F.E. ALLEN'S PAT. FEB.3, '74". An exceptional accesory for any vintage/antique jewelry shop. The ring size lines are plainly visible all the way up to a size 13. Priority confirmation shipping is $8.00. I accept either money orders or cashier chex.