Drawbridge Construction of a nostalgic drawbridge and how it is also in use today. The geared motor is driven by switch contacts and lifts or lowers the bridge. LED:s and a mechanical driven barrier govern when the bridge can be crossed. The project pack is prefabricated as far as possible. A detailed instruction with many pictures ensures successful working. Measures: 600 x 150 x 320 mm, less batteries (2x 1,5V baby cells)