Mitutoyo 500-753-20 ABSOLUTE coolant-proof calliper delivers highly accurate, four-way measurement capabilities ideal for shop floor use. Measurements are shown on a larger, impact-resistant digital display. It delivers accurate, repeatable outside dimension, inside dimension, depth, and step measurements with accuracy and unrestricted speed in an ergonomic design. The calliper's slide and jaws are constructed of hardened stainless steel and provide an impact-resistant, easy-to-ready LCD display for durable, reliable use. The ABSOLUTE calliper can be used in workshop conditions exposed to coolant, water, dust, and oil. Coolant proof is the universal term for Mitutoyo Digimatic Small Tool Instruments that are free from measurement error and physical deterioration due to routine exposure to water, cutting oil, or coolant. The high performance is achieved by using encoders that are inherently immune to contamination where exposure is inevitable, combined with comprehensive sealing techniques and extremely oil-resistant materials to guarantee a long working life under normal operating conditions.