About This 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 0-6 inches (150mm) 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. Ready to Use – Designed for convenient and long-lasting performance for professionals and hobbyists alike. US Patent design. Overview Brand : Clockwise Tools Material : Stainless Steel Product Dimensions : 9.25"L x 0.75"W Measurement Accuracy : ±0.001"/0.03mm Number of Batteries : 2 CR2032 batteries required. (included)