Description: Can measure OD (outside diameter), ID (inside diameter), depth, and step Lock screw for holding the sliding jaw position Made of premium carbon steel, anti-rust, hard, durable Clear graduations provides easy reading With a case, easy to store and carry Specification: Length: Approx.40cm/15.75 inch Accuracy: 0.02mm Material: Carbon Steel Color: Silver Package Includes: 1 Piece Vernier Caliper