The Starrett Digital Outside Micrometer is a precise tool for measuring outside dimensions of machined parts. With a range of 0-1 inches and a resolution of 0.0001 inches, this micrometer allows for accurate measurements to +/- 0.0001 inches. The mechanical reading makes it easy to use and understand, while the outside micrometer design is ideal for measuring flat surfaces. Starrett is a trusted brand known for quality measurement tools, making this product a reliable choice for metalworking and manufacturing applications.