Perpetual Clock CalendarThinking of something old school for your home or office? This 23. 5" Perpetual Clock and Calendar will help you track not only the time but the day and month. Although the clock is mechanical, the outer rings will need to be adjusted manually. Made from locally (VT) sourced birch, these are designed and made in Portsmouth, NH. Every order comes with the mechanism and is ready to go out of the box. As I make these on demand, please allow 1 2 weeks for