Functional: This caliper is ideal for basic demonstrations of the caliper measuring process for students in the caliper industry. education. At the same time, it also meets the needs of industrial measurement, and can measurevery accurately data such as depth and height. Material: This product is made of high carbon steel and is very durable. It is high hardness and wear-resistant, suitable for a variety of environments. Precision: The scale is engraved by precision equipment, which is much more precise and less error than traditional products. Measuring range of 0-150mm, which can perfectly meet the laboratory measurement needs Unit of measurement: The product scale includes two main measurement units, metric and imperial, which conform to international standards and can meet different needs Accessories: An extra deep depth gauge is added to the back of the product to measure corners that are not normally tactile, making the product versatile