The Mitutoyo 1-2" Outside Micrometer is a high-quality precision tool for measuring outside dimensions with a minimum of 1 inch and a maximum of 2 inches. Made in Japan, this micrometer features a resolution of 0.00100 inches, allowing for accurate readings to the nearest thousandth of an inch. The Mitutoyo brand is known for its reliability and performance in the field of metalworking inspection and measurement, making this micrometer a valuable tool for professionals seeking precise measurements in a range of industrial applications. Operation is smooth and has ratcheting thumb screw