SURGICAL INSTRUMENT (?) Appears to be made of solid steel. Has part that twists that open and closes the hook on the end, but not tight enough to be a clamp, so perhaps some kind of measuring device Reads ?Posterior Femur? on it, so I am assuming something that helps with femur surgery(?) Also has this serial # on it: 66737200 9801-89 I have tried image and word searches and looked for the number, all to no avail. If you know what this is and can help provide information that I can use to make this a better posting I would be most appreciative. My ignorance could be your gain. Appears to be in good condition and working order. What you see is what you get so please view picture carefully and ask any questions you may have. Your satisfaction is important to me. Any and all questions answered, and happy to send more pics / info etc. Please look at my feedback and buy with confidence. Please see my other listings for more great collectibles and books! Happy to discount shipping for multiple wins!