Description: Mechanical wind up timer - similar to kitchen timer, but with a greater force as it unwinds. No bell necessary. Usage: It's being used to slowly lower an antenna as time passes. There is a wire attached to the timer running up to the top of the antenna. As the user pulls the antenna, it winds the timer. After it is wound, each tick needs to come back with some force (able to overcome the friction of the antenna) to slowly lower the antenna. Requirements: Silent (or very quiet), must be less than ？ inch in height, 3 inches in diameter. Purely mechanical/wind up - No battery. Let me know if this is something that your company is able to work with me on, and we can discuss more specifics. Let me know if you have any questions. Show More