Check the listing for details. Outside Micrometer, 0-1inch Range 0.0001" Accuracy, Blue. Condition: New. Listed at 26.45 USD. The spherical micrometer is made of ductile iron and alloy steel, which have high strength, high toughness, excellent stability and shock absorption performance. The overall structure is sturdy, durable and wear-resistant, with rust prevention performance and longer service life.The professional micrometer adopts the principle of spiral micrometer, combined with clear scale lines and differential cylinder, the reading is intuitive and clear, effectively avoiding visual errors. Equipped with a ratchet stop mechanism, it can ensure uniform measurement pressure, coupled with high recognition scales, to achieve accuracy of measurement.When using, clean measuring surfaces and zero the micrometer (use calibration rod for >25 mm). Adjust zero with screwdriver and wrench. Measure vertically, rotate the force device until it clicks.