A <a href="https://en.wikipedia.org/wiki/Sundial" class="extiw" title="w:Sundial">Sundial</a> in the collection of the <a href="https://en.wikipedia.org/wiki/National_Maritime_Museum" class="extiw" title="w:National Maritime Museum">National Maritime Museum</a> Greenwich.
Photograph by <a href="//commons.wikimedia.org/wiki/User:ClemRutter" title="User:ClemRutter">Clem Rutter, Rochester, Kent.</a> (<a rel="nofollow" class="external text" href="http://www.clemrutter.net/">www.clemrutter.net</a>).
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>