Wide range of inside measurements possible by combining extension rods and anvils with the measuring heads The sleeve is rotated to adjust the index line position when setting to a length standard
50-200mm capacity x 0.01mm graduations, Inside Micrometer set, Interchangeable Rod Style 3 extension rods included, Each interchangeable extension rod is marked with its measuring range, For models supplied with more than one rod, the full measuring range is achieved