This set of pendulum clock movements is ideal for repairing a clock or designing your own. Almost anything you can drill a 3/8 in. hole into (10 mm) can be turned into a clock if there's room for the pendulum to swing. Movements will fit a surface up to 3/4 in.-thick (19 mm). The minute hand is approximately 2 in. (51 mm), the hour hand is approximately 1.25 in. (32 mm), and the pendulum is 9.625 in. (244 mm). Requires a AA battery, not included. Clockmaking components for makers and hobbyists offering accuracy and dependability.