IP54 Protection Multi-Unit Conversion Features IP54 water and dust resistance with inch, metric, and fraction conversion, making it ideal for home DIY and professional use. High-Precision Measurement Offers a measuring range of 0-8 inches (200mm) with a 0.001" (0.03mm) accuracy, 0.0005" (0.01mm) resolution, and an extra-large 3/4" x 2" (20mm x 50mm) LCD display for easy readings Premium Stainless Steel Build Made from fine-polished stainless steel with an advanced depthometer groove, ensuring smooth sliding, durability, and accurate results. RS232 Data Transfer Capability Equipped with an RS232 port for seamless data transfer. Requires "DTCR-02" cable (sold separately, NOT USB compatible) for connection to a PC. Versatile for Various Applications Ideal for metalworking, woodworking, machining, 3D printing, automotive repair, and precision measurements in industrial, manufacturing, and engineering environments. Factory-Calibrated Ready to Use Each caliper is fully calibrated before shipping. US patented design, includes one extra battery for extended usability.