Features:Vintage Design Caliper Ruler: This caliper ruler is a vintage style sliding gauge vernier caliper ruler of beautiful appearance.High Quality Vernier Caliper: This caliper ruler is made of high quality brass, this vernier caliper is strong, non-magnetic and durable.Portable Gauge Vernier Caliper: The Vernier Caliper is light in weight and convenient to carry, you can simply keep it in your bag.High Precision Caliper Ruler: The Double Scale Vernier Caliper has high precision, this sliding vernier caliper would be a great measuring tool for your daily use.Ideal for Measuring Jewelry: the buttons on these pocket rulers make it easy for you to push and pull the ruler, ideal for you to measure the inside or outside diameters of wood beads, glass beads, rings, gems, jewelry and other items. Package Includes:1 Piece Caliper Ruler Specifications:Material: Pure Copper/ BrassSize: 0-80mm/0-60mmMeasuring Range: S: 0-60mm /0- 80mmStyle: A: Single Scale, B: Double Scale note:Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.