Portable and labgrade accurate measuring instrument suitable for both industrial maintenance tasks and advanced engineering projects Durable stainless steel construction provides longlasting performance, with clearly marked scales and ergonomic handles for secure, slipresistant control during intricate measurements Inside micrometer designed with accuracy in mind, offering precise measurements for a range of bore sizes, with erosionresistant durability for mechanical and laboratory applications Trusted by machinists, inspectors, and STEM educators for professional dimensional analysis in workshops, production lines, and technical training environments Practical use scenarios Maintenance and service work requiring precise bore diameter measurements in bearing housings, bushings, and sleeves Engineering prototyping and development where accurate bore checks are needed during assembly and fit verification Quality control and inspection on production lines to verify bore tolerances and ensure specification conformity