BigWallop wrote:


"therebel" wrote in message
...
what is the recognised way of testing mains water pressure. I am looking
at having an electric shower fitted and the pressure is affecting my
choice.


A web search for the word "Manometer" will show you what's needed.

You can make your own with some clear plastic tubing filled with water.
It'll need to be 30 metres or so high, though.