The Starrett Micrometer has a gracefully designed tapered frame for use in narrow slots and tight places. It has a no-glare black finish on the frame with hard and stable one-piece spindle. It is furnished with a no-glare Starrett satin chrome finish on thimble and sleeve that minimizes annoying surface glare under bright lights and comes with micro-lapped carbide measuring faces. The balanced frame design ensures comfortable and accurate measuring with clear, easily read numbers reduce errors. The anvil and spindle are sized at .250" (6.35mm). The combination ratchet and speeder is the perfect tool for quicker adjustment and uniform pressure. While the ring-type knurled lock nut provides quick, sure locking and improved grip. 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.