The IP1 key leveling accessory refers to a positioning ring suitable on all types of vertical duplicating machines. When first time mounting the key leveling accessory on the key duplicating machines, please adjust the end face of milling cutter parallel to the end face of key guide based on the two planes of vise. Make sure the upper end face of the positioning ring clings close to the bottom end face of milling cutter. Then tighten the screw and finish the mounting. It is quick to switch milling cutter and key guide without correction.