The Mitutoyo 511-107 Dial Bore Gage is a high-quality precision tool for measuring the internal diameter of bores ranging from 2'' to 6''. With a resolution of .0001'', this indicator gauge is ideal for accurate measurements in metalworking and manufacturing processes. Made in Japan by the reputable brand Mitutoyo, this reliable gage is designed with precision and durability in mind, making it an essential tool for ensuring quality control in various industrial applications.