A used Lufkin # 680A inside micrometer. Estate item, it does show some soiling and wear.It does have some surface rust. Prior owners name is etched on tool as shown. Has the wooden case and cardboard box. Please see the photos and email any questions. Buyer pays shipping. Postage has increased again, so please see cost before bidding, dimensions and/or weight can make it expensive. If you choose ground shipping, please remember it can also be VERY slow sometimes.