ACCURACY AND PRECISION: The measuring range of stainless steel calipers is 0-150mm/0-6, and the accuracy is 0.005 (0.13m), 0.01mm. The attached locking screws prevent any accidents. While sliding, ensure the specified position and you will get error-free measurement results. TWO MEASURING MODES: 6 inch (0.15m) stainless steel digital calipers with MM/IN button instantly convert between inches/millimeters, no need to waste time on calculations. Then the knurled roller and locking screw ensure smooth sliding and accurate positioning, no more wasting time looking for different tools to measure SAE or metric parts. MORE MEASURING POSSIBILITIES: The 150mm caliper has two outside jaws and depth measuring blades and slide rule maintenance. Measuring outside and inside diameters (holes, slots, etc.), as well as depth and pitch measurements. It is widely used in industrial and automotive, professional, home, and office measurement fields. HIGH QUALITY MATERIAL & LARGE LCD DISPLAY - Stainless steel construction allows the digital micrometer to glide smoothly, ensuring sturdiness and durability, and a long service life, easy storage and carrying. Finely polished IP 54 class stainless steel can block water splashes and dust. The large, high-resolution LCD screen helps you get accurate results quickly and easily. AUTO SHUT OFF & AUTO POWER OFF. GUARANTEE - Automatic power off to save battery life after 5 minutes of inactive operation. The digital caliper with battery box comes with a pre-installed battery (1.5V button cell) and a spare button cell. We promise 2 years warranty and 30 days money back service for any reason. Product Description Technical Specifications: * Measuring Range: 0150mm / 0-6 inch (0.15m) * Resolution: 0.01mm * Accuracy: 0.02mm (100200mm) * Repeatability: 0.01mm * Maximum measuring speed: 1.5m/s, 6in/s * Measuring system: Linear capacitive measuring system * Display: LCD display * Power supply: 1.5V alkaline lithium button cell, type LR44, capacity 180mAh * Working temperature: 5-40 41 to 104 Waterproof, Dustproof, Oilproof The large 12mm x 31mm (0.47 x 1.22) high-contrast digital LCD display is quite easy to read. IP54 Waterproof: Water splash, oil, dust resistance, and auto on/off are convenient to use. KEY BATTERY REPLACEMENT: - Step 1: Use a screwdriver - Step 2: Remove the button cover in the direction of the arrow, and replace the button cover (positive side out). PACKAGE INCLUDES: 1 x Electronic Digital Brake Caliper 1 x Plastic Case 1 x Additional Button Battery (extra) 1 x Mini Screwdriver 1 x User Manual