Trusted by machinists, inspectors, and STEM educators for professional dimensional analysis in workshops, production lines, and technical training environments Accuracy crafted stainless steel inside micrometer offers accurate measurements for various bore sizes, ideal for mechanical and laboratory applications with erosionresistant durability stainless steel construction ensures longlasting performance, featuring markings and ergonomic handles for slip control during intricate measurements Optimized for measuring engine cylinders, pipe fittings, and machined components across automotive, manufacturing, and scientific research sectors Use scenarios Inspect engine components: measure cylinder bores and related internal dimensions to verify tolerances during engine rebuilds or assembly Verify piping and fittings: check internal diameters of pipe fittings and housings to ensure proper fit and seal in installations or maintenance QA of machined parts: perform precise internal measurements on precision components in manufacturing or laboratory research to confirm dimensional accuracy and compliance with specifications