Vernier calipers are widely used in machining to measure the diameter of inner holes. Made of carbon steel, this vernier caliper is durable and solid. It offers high accuracy and is easy and convenient to use. The measuring range is 9-150mm with a measuring accuracy of up to 0.02mm. The finely engraved scale allows for easy reading and precise measurements. Name: Vernier Caliper Measurement Accuracy: 0.02mm Reading Value: 0.02mm Measuring Range: 9-150mm Graduation Value: 0.02mm Application: Machining, measuring inner diameter Color: As shown in picture Material: Metal Package Includes: 1 x Inside Groove Vernier Caliper Note: Only the items listed above are included. Other accessories shown in pictures are not included. Due to lighting and display differences, the actual color may vary slightly from the image. Measurement error tolerance is +/- 1-3mm.