Ship Compass, Compass in a compass house. The glass has disappeared. The cylindrical copper compass boiler is weighted with a lead ring around it, which can be adjusted in height. The cardan ring has been replaced by an unusual suspension: the entire boiler with weight rests on the compass pin, which balances with a ball on top of a rod in the bottom of the compass housing, a spring is provided in the rod, which absorbs vertical shocks. The rose has a transparent mica center, the main and main intermediate zones are indicated and subdivided into eight on the outer paper border. The compass housing has a pendulum on the inside that can be read as a clinometer through a sight glass on the front. At the top, the pendulum has the heading pointer for the compass: because the compass boiler is suspended at a single point, it can turn and the course must be read from the pointer of the quadrant, which follows the pendulum movement of the boiler but does not turn. Two small doors on the sides give access under the compass boiler to be able to disassemble the compass. A spare spring is included. The compass pen has been broken in the past and a new one has been added to the compass, this, in turn, has been broken, the old one has been repaired and replaced., Bramah & Sons (mentioned on object), c. 1825 - c. 1829, wood (plant material), brass (alloy), copper (metal), iron (metal), precious stone (material), agate (chalcedony), paper, lacquer (coating), h 47 cm × w 42 cm × d 42 cm
Keywords:
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