Inside Micrometer Hole Bore Internal Diameter Gage Gauge 5?30mm Range 0.01mm Accuracy

Features: High quality alloy measuring heads can be used for various internal size measurement, fine workmanship and no burr. Clear laser marking line for convenient reading. The main micrometer body is made of stainless steel with chrome plated surface, wearresisting and durable. Designed with locking device, precise machinery structure make it more intuitive and convenient to read. Builtin ratchet stop device ensures accurate repetitive readings. Specifications: Type: Inside micrometer Measuring Range: 5mm~30mm Material: Stainless steel Precision: 0.01mm Weight: 268g(approx.) Zeroing: Clean the surface of measuring anvil heads with a soft cloth, then rotate measuring device to make two measuring surface contact. If two zero lin