If you have broken one of the hands on your cuckoo clock, first remove the nut holding the hands. Remove the hands and note if the center shaft holding the longer minute hand is round or square. Also, take note of the position of the hands. Second, measure the minute hand for length. If the hand is broken, measure from center shaft to outer edge of the dial; this will determine the size of the hands. Third, place the new hands on the clock, being sure to place the hour hand first, then the minute hand. Using the proper hand nut set, re-tighten the hand nut.