DescriptionThis set contains 4 pieces measuring calipers, including 1 piece 150mm inside caliper, 1 piece 150mm outside caliper, 1 piece 200mm inside caliper and 1 piece 200mm outside caliper. Nice combination to meet your different needs and requirements.Features-Color: Silver -Material: Steel -Size: 20.00X6.00X0.60cm/7.86X2.36X0.24in - Made of quality steel material, safe and durable for use, not easy to break or deform. - Compact size, portable and lightweight, easy to carry around. - Measurement caliper is great for you measuring the external and internal size of an object. - Outside calipers measure thicknesses and outside diameters of objects, inside calipers measure hole diameters and distances between surfaces. - Suitable for carving, shaping or modeling, can be used for pottery clay, ceramic sculpture, etc.