The Shepherd 24-hour gate clock at the Royal Observatory in Greenwich, England.

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Size: 3600px × 5400px
Location: Greenwich, UK
Photo credit: © Eric Nathan / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 24, attraction, benchmark, british, clock, convention greenwich, feet, foot, galvano, greenwich, hour, international, length, magnetic, measure, meridian, observatory, ordnance, royal, shepherd, standard, standards, survey, time, timekeeping, tourist, yard, yardstick