<p>A fire hydrant in <a href="https://en.wikipedia.org/wiki/Bewdley" class="extiw" title="w:Bewdley">Bewdley</a>, UK. Taken by me on 4 April 2006.
</p>
As with all such signs the number in the top denotes feed pipe size (100=100mm, 6=6 inch) and the lower number the distance from the sign, in metres or feet  according to the units of the top number.
No machine-readable author provided. <a href="//commons.wikimedia.org/wiki/User:Loganberry~commonswiki" title="User:Loganberry~commonswiki">Loganberry~commonswiki</a> assumed (based on copyright claims).
4 April 2006 (according to <a href="https://en.wikipedia.org/wiki/Exchangeable_image_file_format" class="extiw" title="en:Exchangeable image file format">Exif</a> data)
No machine-readable source provided. Own work assumed (based on copyright claims).