Features 1、Aluminum Alloy Material: The depth caliper is made of aluminum alloy, strong and not easy to break, sturdy, high accuracy and long service life 2、Clear Scale: The main ruler and ruler frame have a slippy line surface, the marking is wear resistant, the scale is clear, and the measurement is accurate 3、Easy Reading: The depth caliper can be locked at any position, and the reading is retained for easy operation 4、Measuring Range: The measuring range of the depth caliper is 0‑200mm/0‑7.9in, with a resolution of 0.02mm, used for inside, outside, step, depth measurement 5、Simple Operation: Operation is simple and convenient, the depth caliper can be used without complicated process Specification Item Type: Depth Caliper Product Material: Aluminum Alloy Measuring Range (mm): Approx. 0-200mm / 0-7.9in Resolution: 0.02mm Use Scenario: for Inside, Outside, Step, Depth Measurement Package List 1 x Depth Caliper 1 x Storage Box