General description The AlwaysH Digital Vernier Caliper is an accurate measuring tool designed for home and DIY projects. It features a large LCD display for easy reading and an auto-off function to conserve battery life. Technical specifications Measurement range: 0 - 6'' / 0 - 150mm Resolution: 0.01" / 0.1mm Accuracy: ±0.2mm/0.01" Material: Sturdy plastic carbon fiber composite Compatibility and accessories Battery powered with pre-installed battery and spare battery included Usage 4 measurement modes: inside diameter, outside diameter, depth, and pitch Inch/mm conversion with a quick one-button switch Zero adjustment function for differential measurement Other information Large, easy-to-read LCD display Auto shut off after 5 minutes of inactivity Note: Manual measurement may allow for a 1-119cm error