UGEARS Wooden Mechanical Date Navigator - Collectible Perpetual Calendar, Laser Cut 3D Wood Model DIY Puzzle Craft

MECHANICAL PERPETUAL CALENDAR - Through a Jules Verne-like system of interlocking gears, this fascinating mechanical gadget will tell you the day of the week for any date for years to come, all the way up to 2044.LASER CUT WOOD - Create this fully functional 3D mode using the pre-cut, laser cut wood pieces. No glue is necessary, just pop the pieces out and snap them into place. Then spin the gears to find the desired date and the machine shows you the day of the week.WORKING GEARS - The inte