Mitutoyo external micrometers ratchet 0 25mm 001mm25 50mm 001mm mitutoyo 103 137 this external micrometer ratchet 0 25mm 001mm from mitutoyo is the ideal lightweight tool for engineering and machining both at the workplace and home equipped with a range of rich features including the tungsten carbide tipped anvils positive locking clamp and enamel frame while the thimble and sleeve have a satin chrome finish mitutoyo 103 137 external micrometer ratchet 0 25mm 001mm