【High Precision】 Stable mechanical dial with clear readings and 2.6cm measuring range. Reduces manual errors and ensures consistent measurement results compared to traditional tool setting methods. 【Large Measuring Surface】 50mm measuring height with 0.0004" accuracy and repeatability. Step design accommodates larger tool measurements. Easy setup with grinding parallel plate. 【Safe Operation】 Spring-loaded measuring surface with low elasticity protects tools from damage or breakage. O-ring seal between base and crystal cover ensures effective waterproof and oil-proof protection. 【High Sensitivity & Clear Display】 Needle dial scale is clear and easy to read. Suction probe ensures accurate measurements. Parallelism and parameters adjustable via grinding parallel plate. 【Wide Application】 Measures and corrects Z-axis height for various materials including metals, plastics, templates, glass, and more. Strong applicability for diverse workpiece materials.