ACCURACY AND ACCURACY - The measuring range of stainlsteel vernier caliper gauges is 0-150mm / 0-6 , and the accuracy is 0005 (0.13m), 0.01mm. Attached locking screws prevent accidental slipping, ensure the specified position, and you get error-free measurement results. TWO MEASUREMENT MODES - The 6 stainlsteel digital calipers inches (0.15m) 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 precise positioning, no more wasted time finding different tools to measure SAE or metric parts. MORE MEASUREMENT POSSIBILITIES - the 150mm caliper has two outer jaws, depth measuring blades and slide rule maintenance. Outer and inner diameter measurement (holes, slot, etc.) as well as depth and pitch measurement. It is widely used in industrial and automotive, professional, home and office measurement fields. material and LARGE LCD DISPLAY - stainlsteel construction allows the digital micrometer to glide smoothly , ensures sturdinand durability, long service life, easy storage and transportation. The finely polished IP 54 class stainlsteel can block splashing water and dust. The large, high-resolution LCD screen helps you get accurate results quickly and easily. AUTO-OFF & GUARANTEED - automatic shutdown to save battery after 5 minutes of idle operation. The digital brake caliper with battery box comes with a pre-installed battery (1.5 V button cell) and a spare button. We promise 2 years warranty and 30 days money back service for any reasons. Product Description Technical Specifications * Measuring range: 0150 mm / 0-6 inch (0.15 m) * Resolution: 0.01 mm * Accuracy : 0.02mm ( 100200 mm) * Repeatability: 0.01 mm * Maximum measurement speed: 1.5 m/s, 6 in/s * Measurement system: Linear capacitive measurement system * Display: LCD display * Power supply: one 1.5V alkaline lithium button battery, type LR44, capacity 180 mAh * Operating temperature: 5 - 40 41 to 104 waterproof, dustproof, oilproof the large 12mm x 31mm high contrast LCD digital display (0, 47 x 1.22) is quite easy to read. IP54 waterproof: splash water, oil, dust resistance and auto power on/off are convenient to use. KEY BATTERY REPLACEMENT: - First step: use a screwdriver -Step 2: Remove the button cover in the direction shown by the and replace the button cover (positive side out). PACKAGE INCLUDES: 1 x Electronic Digital Brake Caliper 1 x plastic case 1 x extra button battery (extra) 1 x Mini Screwdriver 1 x User Manual