Micrometer Inside 50–500 mm Tube with Extension Rods

The Micrometer Inside (I/S) 50–500 mm is a precision internal measurement tool ideal for measuring bore diameters, internal cylinders, and pipe ID. The tube design accommodates interchangeable extension rods (13, 25, 2×50, 100, 200 mm) to extend measuring range and access deep internal cavities. Plain measuring faces ensure accurate, repeatable readings for engineering, machining, and electrical installation work.