The connections for fire hydrants are underground in the UK and these markers direct fire fighters to the access covers.
The number at the top is the size of the mains water pipe bore, the lower number the distance to the cover. The measurements here are metric : millimetres for the pipe bore, metres distance to the cover. Some markers still bear imperial measurements.
Critique welcome. Veteran 365er, 2011 vintage. Only posting occasionally and irregularly now.
I'm an abstract photography enthusiast but not exclusively so.
Born in the...