The ultra micrometer seater die ensures precision with every round. Designed as a non-crimping style die - except in the case of the .30-30 Cal - it holds the bullet and case in perfect alignment during seating. A built-in micrometer allows you to fine-tune the seating depth with exactness, so after an initial setup, simply adjust the stem to achieve your desired cartridge length. Incorporates all the well-known features of the original bench rest seater die for straight-line seating, along with an ultra-precise micrometer for adjusting bullet seating depth The micrometer facilitates precise bidirectional adjustments, offering seamless calibration to an accuracy of 0.0005 inches Graduations at increments of 0.001 are clearly marked Reduces the trial and error previously associated with achieving precise round seating The micrometer features bright, white markings that enhance readability