Feature: 1. Long Lasting Power: Powered by battery (not included) for extended lifespan, this electronic depth gauge is suitable for various applications, suitable for professionals in different fields. 2. Seamless Data Transfer: Easily connect the depth gauge to computers via USB port for seamless data transfer, simplifying data collection and analysis for efficient workflow. 3. Robust Base: Constructed of alloy steel and hardened stainless steel, the depth meter ensures flat base for accurate readings; stainless steel material for durability and long lasting use. 4. Accurate Readings: The depth gauge features an LCD screen for easy and accurate reading of measurements; digital display enhances visibility for clear display of measurement results. 5. Versatile Tool: This depth gauge base is suitable for various applications. Whether used in woodworking, metalworking, automotive, or construction industries, this depth gauge ensures accurate measurements and stable performance. Specification: Item Type: Electronic Depth Gauge Material: Alloy Steel, Stainless Steel Battery: Battery x 1 (battery not included) Measuring Range: Approx. 0-100mm / 4in Accuracy: Approx. 0.01mm / 0.0005in Measurement Speed: ≤3 meters/s . Package List: 1 x Depth Gauge 1 x English Manual 1 x Storage Box Note: 1. This product is an accuracy measuring instrument. Handle it gently to avoid impact and loss of accuracy; 2. Avoid dampness, oil and other liquids from touching the protective film. Do not apply voltage to the ruler to prevent circuit damage; 3. If not in use for a long time, turn off the power (OFF ON key). If not used for more than 1 month, remove the battery;