This Bar Measure is in the original box and 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 box is in rough shape but the measure is undamaged and free of flaws.