Measuring range: 25 - 50 mm Resolution: 0.01 mm Max. total accuracy +-: 0.004 mm Thread: Ø 18 mm Thread pitch: 0.5 mm Draw: A: 8 mm B: 32 mm D: 3.0 mm L: 57 mm DIN 863 for standard expectations ; drum and sleeve matt chrome finish ; frame hammer blow grey lacquered. with insulation plates ; carbide surfaces. lapped. spindle hardened and ground ; locking lever for quick and precise fixing ; with ratchet for constant measuring pressure ; with adjustment key. from up 25 mm with setting gauge made in china