The Starrett 449 Blade Depth Micrometer is a precision tool designed for measuring the depth of cuts in metal. With a range of 0 to 6 inches and a resolution of 0.00100 inches, this micrometer provides accurate and reliable readings. Made in the United States, this depth micrometer features non-rotating rods for consistent and precise measurements. Ideal for metalworking and manufacturing applications, the Starrett 449 Blade Depth Micrometer is a valuable tool for ensuring quality control in CNC machining and other industrial processes.