BobG
Science Advisor
- 352
- 88
Just to be sure this thread isn't locked for violating forum rules about changing light bulbs, I have a link essential to this subject:
Manhole Covers of the World
I especially like the bright red disclaimer, "I DO NOT SELL MANHOLE COVERS!"
Too bad he never traveled to http://www.drainspotting.com/mirror/nhtelegraph-2003-11-26/ . Their manhole covers are triangular and point in the direction that the sewage or drainage should be flowing.
Manhole Covers of the World
I especially like the bright red disclaimer, "I DO NOT SELL MANHOLE COVERS!"
Too bad he never traveled to http://www.drainspotting.com/mirror/nhtelegraph-2003-11-26/ . Their manhole covers are triangular and point in the direction that the sewage or drainage should be flowing.
Last edited by a moderator: