Feature: 1. Conversion Key: The electronic digital display caliper is 0-150mm, and there is a unit conversion key on the caliper, which is convenient for you to measure and use. 2. High Accuracy: As a caliper, high accuracy is necessary, our electronic digital display calipers are accurate to 0.1mm, accurate to take the value. 3. LCD Display: Our caliper is practical and easy to read at a glance. Scale film font is clear, digital reading, scale reading secondary reviewing. 4. Black Appearance: Our electronic digital display caliper adopts black silk extra view, inner diameter measuring jaw and outer diameter measuring jaw are more easily identified. 5. Wide Use: This electronic digital display caliper is perfect for measuring the inside and outside diameter of tools and is suitable for laboratories, factories and classroom presentations. Specification: Item Type: Electronic Digital Display Caliper Material: Plastic Specifications: 0-150mm, black, transparent box Product Color: Black Battery Model: 1.5V LR44 button cell Use: Measure the inner and outer diameter of tools Total Length of Caliper: Approx. 240mm / 9.45in Caliper Measuring End Length: Approx. 76mm / 2.99in Caliper End: Approx. 16mm / 0.63in . Package List: 1 x Electric Digimatic Caliper1 x Storage Box1 x Button Cell