0.01mm accuracy and a base that securely clings to metal surfaces for stable operation. Industrialgrade durability with usercentric design: shockresistant mechanics and bidirectional scale markings enable accurate readings from multiple angles. Delivers stable performance in metalworking shops, mold manufacturing facilities, and equipment maintenance scenarios where submillimeter measurement accuracy matters. Largediameter rotating gauge, rustresistant aluminum alloy construction, and an adjustable base that rotates for visibility and flexible positioning in tight spaces. Use scenarios In metalworking shops: verify workpiece dimensions during milling or turning, with the base clinging to the surface to maintain position during measurement. In mold manufacturing: check mold core and cavity gaps and component alignment to ensure submillimeter tolerances during assembly. In equipment maintenance: inspect mounting surfaces and fixtures after disassembly/assembly to confirm proper alignment in constrained spaces.