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Description: | HEATH & Co Ltd LONDON No 12
A bearing plate or pelorus for use in airships. A copy of one taken from a Zeppelin brought down. The whole made in alloy.
Revolving dial: Graduated to 360 degrees fitted with two screws for clamping dial to base plate, base plate has two two pointers whcih indicate course set on revolving plate.
Sight vanes: Height 4.25" ( 12.1cm) Carried on rotatable cross bar, which also carries three parallel wires, attached to base plate and rotatable ring by a brass screw. The fore sight is fitted with a sliding bar carrying a dark shade and V sight at top. The other with a hinged dark reflector for taking sun bearings and sight thread and a sight at top.
Inscription.
caption: Record Shot - Do not reproduce. | Publisher: | "http://collections.rmg.co.uk/" | Rights holder: | "Royal Museums Greenwich" | Subjects: | airship instruments peloruses | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
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