ACCURACY AND ACCURACY - The measuring range of stainless steel caliper gauges is 0-150mm/0-6, and the accuracy is 0005 (0.13m), 0.01mm. Attached locking screws prevent any accident When sliding, make sureof the specified position and you get error-free measurement results. TWO MEASUREMENT 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 andLocking screw ensures smooth sliding and precise positioning, no more time wasted 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. Measurement of outer and inner diameter (holes, slot, etc.) as well as depth measurementand step. It is widely used in industrial and automotive, professional, home and office measurement fields. High quality material and LARGE LCD DISPLAY - stainless steel construction allows the digital micrometer to slide smoothly, ensures sturdiness and durability, long service life, easy storage and transportation. Finely polished stainless steelIP 54 class can block splashes of water and dust. The large, high-resolution LCD screen helps you get accurate results quickly and easily. AUTO-OFF & GUARANTEE - automatic shutdown to save battery after 5 minutes of idle operation. The digital brake caliper with battery box comes with a pre-installed battery (1.5V button cell) and a replacement 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: 0.02 mm (<100 mm); 0.03 mm (> 100200 mm) * Repeatability: 0.01 mm * Maximum measuring speed: 1.5 m/s, 6 in/s * Measuring system: Capacitive measuring systemlinear * Display: LCD screen * Power supply: one 1.5 V alkaline lithium button cell battery, type LR44, capacity 180 mAh * Operating temperature: 5 - 40 41 to 104 Waterproof, dustproof, oilproof The large 12mm x 31mm (0.47 x 1.22) high-contrast LCD digital display is quite easy to read. IP54 waterproof: splash water, oil, dust resistance and automatic power on/off are convenient to use. REPLACING THE KEY BATTERY: - First step: use a screwdriver -Step 2: Remove the button cover in the direction indicated by the arrow and replace the button cover (positive side out). THE PACKAGE INCLUDES: 1 x electronic digital brake caliper 1 x plastic housing 1 x extra button battery 1 x mini screwdriver 1 x user manual