Made of stainless steel with polished, rust-resistant hardware. Sturdy, high-hardness construction ensures strength, durability, and long service life. Smooth surface and edges with no burrs. Inside calipers are available in the same size range as outside calipers. Friction at the joint holds the legs securely in place. Features - Color: Silver - Material: Steel - Size: 20.00 x 1.50 x 0.50 cm / 7.86 x 0.59 x 0.20 in - Hardened and finely polished steel tips for precision and durability - Inside calipers measure hole diameters and distances between surfaces - Outside calipers measure thicknesses and external diameters of objects - Lightweight and easy to handle; ideal for transferring measurements from models to clay for both internal and external dimensions - Suitable for measuring external and internal dimensions that standard calipers cannot access, such as in sculpture, pottery, and tubing Packaging includes: 2 x Calipers