PRECISION & ACCURACY - The measuring range for stainless steel caliper measuring tools is 0-150mm / 0-6 inches, and the accuracy is 0.0005 inches (0.013mm), 0.01mm. The attached locking screws prevent accidental slipping, ensure the specified position, and provide error-free measurement results. TWO MEASUREMENT MODES - Digital calipers 6 inch (0.15 m) stainless steel with the MM/IN button convert instantly between inches and millimeters, eliminating the need for manual calculations. The knurled thumb roll and locking screw ensure smooth sliding and accurate positioning, reducing the need for multiple tools when measuring SAE or metric parts. MULTIPLE MEASUREMENT OPTIONS - The 150mm caliper features outer jaws, inner jaws, depth rod, and step measurement capabilities. It can measure outside and inside diameters (holes, slots, etc.), depth, and step dimensions. It is widely used in industrial, automotive, professional, household, and office applications. HIGH-QUALITY MATERIAL & LARGE LCD DISPLAY - The stainless steel construction ensures smooth sliding, durability, and long service life. Easy storage and transport are guaranteed. IP54 grade fine polished stainless steel resists splashing water and dust. The large, high-resolution LCD screen allows for quick and accurate readings. AUTO-OFF & GUARANTEE - Automatically shuts off after 5 minutes of inactivity to save battery power. The digital caliper comes with a pre-installed 1.5V button battery (LR44) and includes one spare battery. It features a 2-year warranty and a 30-day refund service for any reason. PRODUCT TECHNICAL SPECIFICATIONS * Measuring range: 0-150mm / 0-6 inch (0.15m) * Resolution: 0.01mm * Accuracy: 0.02mm (100-200mm) * Repeatability: 0.01mm * Maximum measurement speed: 1.5m/s, 6in/s * Measuring system: Linear capacitive measuring system * Display: LCD screen * Power supply: One 1.5V alkaline lithium button cell type LR44, 180mAh * Working temperature: 5C to 40C (41F to 104F) * Waterproof, dustproof, oil resistant The 12mm high-contrast large LCD digital screen (31mm, 0.47" x 1.22") is easy to read. IP54 rated for protection against splashing water, oil, and dust. Auto power on/off function for convenience. BATTERY REPLACEMENT: - Step one: Use a screwdriver - Step two: Remove the battery cover in the direction indicated by the arrow and reinstall the cover with the positive side out. PACKAGE INCLUDED: 1 x Electronic Digital Caliper 1 x Plastic Case 1 x Extra Button Battery 1 x Mini Screwdriver 1 x Instruction Manual