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Description: | This astronomical regulator was originally made for use in observing the Transit of Venus in 1874. In 1923 it was adapted as the primary standard for the new six-pip time signal. The clock sent electrical impulses down a telephone wire to the BBC for conversion into audio pips for radio broadcasts. It has a zinc tube temperature-compensated pendulum and was corrected from 1929 by the Shortt master clock number 16. The three sets of contacts for closing the six-pip circuit every quarter of an hour can be seen in two of the holes within the seconds dial, and halfway down the pendulum, operated by a roller.
This clock was in service for the BBC signal at the Observatory from 1924 to 1949, when it was superseded by a quartz clock.
AUDIT - when this object comes off display it needs to be checked to see if the parts are physically marked.
caption: Greenwich Mean Time Pips Clock. Eight Day Regulator made by E.Dent and Co London (numbered 2016) | Publisher: | "http://collections.rmg.co.uk/" | Rights holder: | "Royal Museums Greenwich" | Subjects: | regulators (clocks) Treasures of the National Maritime Museum | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
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