Material
- An Earth globe
- A large mouth bottle, the earth globe should rest easily on the open mouth of the bottle.
- Compass
Assembly
Go outside into direct sunlight. Place the bottle on the ground and place the earth globe onto the bottle. Rotate the earth globe until your city or location on earth is located at the top center of the globe. Keep your location at the top center and rotate the globe until the north pole of the globe points due north. (Use a compass to find true north, don't forget to correct the compass for magnetic deviation. See the Etc.)