Hemisferium Beringer's QuadrantThis model is a reproduction of a mobile cubic quadrant that dates back to 1736 and is thought to be the invention of German scientific instrument maker, David Beringer. It is a universal dial meaning it can be used at all latitudes and made up of an articulated arm which allows the user to position the cube in a North South direction, and a plumb line on the Eastern side that moves along a graduated scale, which allows users to adapt the instrument
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