Diesella Internal 3-Point Micrometer 25-30 mm with extensions and setting ring

For through holes and bottom holes. With matt chrome-plated reading parts, carbide measuring surfaces and friction device that provides a constant measuring force and self-centers the measuring unit. Delivered in aluminum box. • Carbide measuring surfaces • Constant measuring force • Incl. extension 150 mm • Incl. control ring • For through holes and bottom holes