The first magnetic compass made of stone nature. Spoon shape with a smooth bottom and it. Can rotate freely on the "Di were" (plate indicate direction), which is made from copper or wood, and the compass swivel stops.The first magnetic compass made of stone nature. Spoon shape with a smooth bottom and it. Can rotate freely on the "Di were" (plate indicate direction), which is made from copper or wood, and the compass swivel stops.
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