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. Airship pelorus An early type of bearing plate or pelorus for use in airships. White metal disc painted black, has graduated dial, quadrantally in degrees, which is set to course steered, against a lubbers arrow. Sights are taken by sight vanes set on a
1913
National Maritime Museum

. Box for Liquid compass
1913
National Maritime Museum

. Liquid compass Bowl: Black painted brass, filler plug at side, expansion chamber at base. Inside of bowl painted white. The lubber point is of unusual shape, this being to permit the reading of an adjustable graduated ring which is operated by a screw i
1913
National Maritime Museum

. Liquid compass. Bowl: A brass bowl painted black set in double gimbals. Has a heavy metal weight at the bottom with hole inside to allow for illumination. Protruding lubber line. Card: A white card with black markings graduated to points and 0 - 360
1913
National Maritime Museum

. Magnet carrier, compass corrector A simple type of carrier for correcting magnets as used with Patt 200 compasses. Wooden block in form of a +. Accomodating 4E-W and 4 N-S magnets. Has four metal plates covering holes where magnets are inserted. Metal m
1913
National Maritime Museum

. Azimuth motor for the Sperry Mark II Gyro Compass
c1913
National Maritime Museum