This decorative (but working) Wooden perpetual calendar model is a wonderful conversation piece! Looks much more complex than it really is.
Complexity is not too difficult on this one but you do need to take care not to break the wooden pieces when you snap them out of the board. Using a razor blade to trim the piece out is the safest method.
Snap wooden pieces from the pre-drilled board and follow the directions on the inner package. All pieces connect using wooden pins and holes. No glue is required.
To operate, turn the numbered piece to match the date. The inner gears will rotate as you turn the wheel.