Notices explaining the Shepherd 24-hour Gate Clock and the Time Ball, Royal Observatory, Greenwich, South London, UK

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National Standards of Weights and Measures are kept at Greenwich Royal Observatory.

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Size: 3560px × 5360px
Location: Greenwich, London, UK
Photo credit: © Grazyna Bonati / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 24-hour, ball, clock, gate, gmt, greenwich, heritage, london, meridian, national, observatory, prime, royal, shepherd, site, south, time, uk