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Date: |
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Description: | Cary London
The station pointer consists of a graduated circle and three arms, one of which is fixed (at 0 degrees on the scale), while the other two can move around the circle and have fixing screws. The circle has a diameter of 7.25 inches (184 mm) and is made of brass with a silvered degree scale. The scale runs from 0 to 360 degrees, with 20-minute subdivisions, while verniers on the movable arms allow reading to 1 minute. It is contained in a fitted wooden case, which also holds wooden extension pieces for each of the arms, fixing screws (one of which is missing) and a magnifier for the scale.
Ex DI.74.
caption: Station pointer
caption: Station pointer - inscription
caption: Station pointer - box | Publisher: | "http://collections.rmg.co.uk/" | Rights holder: | "Royal Museums Greenwich" | Subjects: | station pointers Station pointer Vernier | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
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