Pages that link here:
Compass is one of the most important early inventions. It enabled more complex navigation that didn’t rely on the sun and the visible fixed points on the coast which in turn enabled transoceanic travels and more precise map making.
Compass is a simple instrument and it can be made in the house with a sewing needle, cork, magnet and glass of water. More precise instrument is made in fabrics and much more carefully because human lives can depend on it.