The Starrett 731XFL-2 Outside Micrometer is a precision tool designed for measuring outside dimensions with a range of 1 to 2 inches. Made in the United States by the reputable brand Starrett, this micrometer offers electronic readings and a resolution of 0.00005 inches, providing accurate and reliable measurements for metalworking inspection and measurement tasks. With a need for calibration of the SPC port, this micrometer is essential for ensuring quality control in CNC, metalworking, and manufacturing processes.