The Mitutoyo 530-104 Standard Model Vernier Caliper has a measuring range of 0-150mm/ 6" and a metric/inch Dual Scale with a Lower Scale Graduation of 0.05mm, Upper Scale Graduation of 1/128" and an accuracy of +/- 0.05mm. Features a small face angle of 14 degrees which provides easy reading. Measures Outside Diameter, Inside Diameter, depth and steps. Furnished in Satin Stainless Steel with easy reading graduations. Equipped with a lock screw for holding the sliding jaw position allowing the user to get easy measurements.