Inner Diameter Micrometer, 5-30mm Spiral Inside Micrometer Stainless Steel Hole Bore Internal Gauge Range 0.01mm Precision

【Stainless Steel Spiral Micrometer】Bore Micrometer mainly made of stainless steel, Alloy measuring tip ensures precise internal diameter measurements from 5mm to 30mm, with a 0.01mm resolution. Fine craftsmanship delivers a burr-free, durable surface for long-lasting use. 【Clear Laser Marking】Mechanical bore gauges are of excellent workmanship, High-definition laser-etched scales offer sharp, glare-resistant readability for quick and accurate measurements, complemented by an insulated frame design. 【Sturdy & Anti-Slip Construction】30mm inner diameter micrometer made from stainless steel with a chrome-plated finish, the housing is wear-resistant, durable, and provides a secure, comfortable grip during operation. 【Reliable Locking Mechanism】High accuracy inside micrometer support calibrate, the built-in locking device securely holds measurements in place, precise machinery structure preventing accidental shifts and allowing for intuitive, consistent reading. 【Precision Ratchet Stop】Mechanical bore micrometer equipped with a ratchet positioning mechanism to ensure repeatable, accurate readings by applying uniform pressure during measurement.