Selection of plastic materialsOur vernier caliper is made of high-strength plastic, lightweight and convenient to use. Made of high quality ABS plastic, the digital caliper has a long service life. The vernier caliper measuring tool works all the time without fear of stopping because the battery runs out, like other calipers Convenient Push - pullThe buttons on the vernier caliper Push-pull vernier caliper are well-made, convenient for Push-pull, not easy to slip or jam, accurate measurement, convenient and quick. The professional vernier caliper is made entirely of plastic and is suitable for measuring jewelry and jade to prevent scratches Clear graduationThe scale film of the two-sided plastic measuring caliper has clear writing, and the English metric system can be freely converted. Don't worry about your different reading habits and annoying use. The British metric caliper is an essential tool for accurately measuring many scenes Caliper Size150mm / 6 inch. Comes in three colors: black, red and white Wide applicationOur vernier caliper can measure inner diameter, outer diameter, depth and steps. The double scale vernier caliper that can be used all the time is very suitable for families, carpenters, mechanics, jewelers and even professionals. It is a good tool for measuring Dimensions