Cos’è questa cosa blu?
https://www.reddit.com/gallery/1htyy04
di ItzYeyolerX
Cos’è questa cosa blu?
https://www.reddit.com/gallery/1htyy04
di ItzYeyolerX
3 commenti
Tells you where pipes and stuff are located.
Marking of in-ground supply valves. IIRC, blue is water supply and yellow is gas supply.
SCH probably means „Schieber“, which is a type of shut off valve. 100 is the diameter (not sure if diameter of the underground pipe or diameter of the access / manhole cover). The other numbers are the distance from the signs to the actual supply valves, e.g. first one can be found at a straight distance 3.2 meters plus 1.4m to the left (if you stand with the sign to your back).
I think, OP should provide some context and indicate where we can find “this blue thing”…