Etalons on the wall of Royal Observatory Greenwich, London, Great Britain depicting length measures.

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Etalons on the wall of Royal Observatory Greenwich, London, Great Britain depicting length measures - 1 yard (3 feet), 2 feet, 1 foot, 6 inches (1/2 foot), and 1 inch.

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Size: 5100px × 3400px
Location: Greenwich Park London UK
Photo credit: © Leila Cutler / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: borough, britain, covered, england, etalons, great, greenwich, london, observatory, park, royal, sign, snow, uk, wall