With the Mitutoyo 468-974 internal micrometer set, you measure inside diameters from 50 to 100 mm with extreme precision. Equipped with four interchangeable heads and a 0.001 mm resolution, this set helps you verify tight tolerances during cnc machining or quality inspections in the metrology lab. The three-point contact geometry automatically centers inside the bore, preventing tilting errors and delivering highly repeatable measurements every time. Its clear lcd screen eliminates parallax and reading mistakes during fast inspections. With IP65 protection and wear-resistant titanium nitride coated anvils, you can work confidently even in tough workshop conditions exposed to dust and splashing coolant.