This is a Used Good to Very Good Condition Antique L.S. Starrett Co. 3" Flat Leg Inside Calipers! They are marked with the Patented June 2 1885 Date. They were made in Athol, Mass. USA! I just don't know when! The spring is still really strong and the tips are in good shape to! There are NO initials or Names on it! The surface does show minor dings and corrosion marks! They are all clean now! This has the solid nut on it! They are approx 3 inches long from the swivel poi...nt to the tips while closed! The overall length is approx 3 1/2" long while the tips closed! This is a really cool old tool! See the pictures so you can judge the condition for yourself! Remember what you see is what your going to get! All sales are final! Shipping is included on this item! Thanks for looking Mike! I will gladly leave seller feedback when I get buyer feedback!