The Starrett Micrometer has a no-glare black wrinkle finish on frame. The hard and stable one-piece thimble with rachet lock permits one-hand operation of micrometer and uniform contact pressure. It is furnished with a no-glare Starrett satin chrome finish on thimble and sleeve that minimizes annoying surface glare under bright lights indoors or filters out UV light and comes with micro-lapped carbide measuring faces. The balanced frame ensures comfortable and accurate measuring. It's Inch/millimeter metric conversion provides simple, universal, standardized unit of measurement at any position. The ring-type knurled lock nut provides quick, sure locking and improved grip. It comes with large, easy-to-read, high-contrast LCD digital readout. With IP67 protection against coolants, water, chips, dust and dirt often found in machine shop environments. Starrett tools are designed to be user-friendly. Whether you're an experienced professional or an amateur when it comes to home improvement, our tools are handy and accessible. Starrett has set the standard for precision, quality, and innovation. Our products are long-lasting and robust with excellent service and performance. Manufacturing long-lasting and easy to use tools that provide consistent and reliable performance since 1880, Starrett tools are made with the highest standard of quality and workmanship, manufacturing more than 5,000 various tools, gages, and instruments, providing fine precision tools for industrial, professional, and consumer markets worldwide.