This Bar Measure looks as if it has never been used. It is made of chromed plastic and is approximately 2.5" in top diameter. It is used to serve 1/2, 1, 1 1/2, and 2 oz. shots. U S Patent 210312. Issued by Crossbow, Inc. of Cincinnati, Ohio. The Marksman is a registered trademark and promises "A Perfect Shot Every Time." The measure is undamaged and free of flaws.