High precision: This digital caliper adopts the glass fixed grid process, which can effectively prevent the measurement accuracy of the caliper caused by humidity, magnetism, etc., and greatly ensure the stability of the measure. Measuring range : 0-6"/0-150 mm; Accuracy: 0.001"/0.02mm; Resolution: 0.005"/0.01mm. Large LCD display: easy to read. Digital calipers are available for internal, external, depth and stride measurements, four measuring jaws and a depth bar. The knobs and locking screws make it easy to obtain reliable and precise measurements. 2 Unit conversions: inches and millimeters; every measurement point is set to zero. High quality caliper and automatic on/off: the caliper body is made of premium thickened stainless steel (about 3.5mm), waterproof, wear-resistant, rust-proof, good fitted and polished. Internal/external measuring jaws and depth measuring are well connected, no paper jam. The measurement error is greatly reduced. IP54 and economical protection rating: Double IP54 protection against dust, splashing water and grease (caution: do not use in water). High quality polished stainless steel frame and knurled thumb glass ensure smooth sliding, durability, longer life and easy storage and transportation. This thickness measuring tool is perfect for woodworking, jewelry making, and more. It is widely used in household, industrial and automotive applications and is also ideal for mechanics, engineers, carpenters and hobbyists.