Feature: 1. LONG LASTING: This digital depth meter base is powered by a cell battery(not included) and has a long service life for a variety of applications 2. APPLICABLE SCENARIO: Whether you are measuring depth through electronic depth measurement, this tool is suitable for professionals in different fields. Range 0-150mm/6in, accuracy 0.01mm/0.0005in 3. DATA TRANSFER: The digital depth gauge easily connects to your computer via a USB port and seamlessly transfers data. This convenient data transfer capability simplifies data collection and analysis 4. STURDY MATERIAL: The depth gauge base is made of alloy steel and hardened stainless steel, ensuring a flat base and more accurate readings. Its stainless steel material is strong to ensure long term use 5. CLEAR SCREEN: This depth meter base is designed with an LCD screen for easy and accurate reading. The digital display enhances visibility and ensures a clear display of measurement results Specification: Item Type: Digital Depth Gauge Material: Alloy steel and stainless steel Battery: 1 x Cell battery (not included) Measurement Range: Approx. 0 ~ 150mm / 0 ~ 6in Accuracy: Approx. 0.01mm/0.0005in Measurement Speed: ≤3meter/s . Package List: 1 x Depth Gauge 1 x User Manual 1 x Storage Box Note: 1. This product is a precision measuring instrument, please handle with care to avoid impact and loss of accuracy;2. Avoid getting the protective film wet with water, oil, or other liquid substances, and do not apply voltage to the ruler to prevent damage to the circuit;3. When not in use for a long time, turn off the power(OFF/ON) key. If not using for more than 1 month, remove the battery.