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Date: |
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Description: | 1153
Bowl- Brass, with very heavy bottom weight. Inside of bowl, white with black painted lubber line. At centre of verge glass is fitted a socket to accommodate the deflecting apparatus, No.526A. This consists fo a circular base which has two vertical metal arms, one graduated. A sliding frame carrying a 3.75" (9.5cm) magnet of square section is fitted on the arms and this has two lines engraved for reading the scale. It can be raised or lowered by a rack-operated wheel and pinion. A prismatic telescope No 526B forms part of the outfit. Mounted in brass gimbal ring and attached by metal brackets to a wooden stand. 11" x8" x 0.75" (27.9 x 22.2 x 1.9cm)
Card- Diameter 5.25" (13.3cm) Paper ring 0.75" (1.9cm) wide, white with black markings, graduated quadrantally in degrees. mounted on a very light aluminium framework which carries the pivot cap at its centre.
Needle- Six needles are hung on fibres attached to their centre and the light framework, so that they are free to be affected by the Earth's vertical force.
Pivot- Bras tube atached to bottom of bowl into which is screwed a steel-tipped pivot point. This engages in a jewelled pivot cap carried at centre of framework supporting cad.
Stored with ACO0483
Not weighed as this object also has ACO0483 attached, therefore weight would be inaccurate.
caption: Record Shot - Do not reproduce. | Publisher: | "http://collections.rmg.co.uk/" | Rights holder: | "Royal Museums Greenwich" | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
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