Feature: 1. [Performance] Made of high quality stainless steel, this vernier caliper is shock resistant, wear resistant, durable, smooth and strong. 2. [Convenient Measurement] One key conversion between metric and imperial systems, convenient and quick measurement, no need for cumbersome conversion. 3. [Exquisite Workmanship] Using electroplating process, this digital vernier caliper has exquisite workmanship. 4. [Clear Scale] This digital vernier caliper has a clear scale, easy to read data, and has accurate measurement. 5. [Measuring Range] Simple to operate, the digital vernier caliper has a measuring range of 0 to 150mm, and is a good choice for measuring objects. Specification: Item Type: Digital Vernier Caliper Material: Stainless Steel Power Supply: For LR44 1 x 1.5V (Battery Not Included) Purpose: Object Thickness, Width, and Height Measurement Measuring Range: Approx. 0 to 150mm / 0 to 6in Resolution: Approx. 0.01mm / 0.0004in Measuring Speed: 1.5m / sec, 60in / sec Unit: Metric / Imperial Process: Electroplating Display: LED Working Temperature: 5℃ to 40℃ / 41℉ to 104℉ Influence of Humidity: Less Than 80% Relative Humidity is Not Important. Package List: 1 x Digital Vernier Caliper (Battery Not Included)1 x Screwdriver 1 x Storage Box1 x User Manual Note: 1. Clean the caliper rod with a dry cotton cloth before use, so as not to cause the caliper to appear disorderly due to moisture.2. Keep the calipers clean and dry (liquid will damage the slider).3. The face should be cleaned gently with cotton fabric, and do not use gasoline, acetone and other organic solvents.4. To save power, turn off the device when the caliper is idle for a period of time.5. Do not put any pressure on any part of the caliper, do not use the electronic pen, so as not to damage its chip.