"James Silverton" > wrote in message
...
> It is probably a bit OT (except when I make a mistake and come close to
> scalding myself) but I wonder why single handle controls in showers have a
> vast range of adjustment for temperature? Usually, both in mine and in
> hotels, the control can be rotated a half circle (180 degrees) but all the
> acceptable temperatures are within a 10 to 20 degree rotation and the rest
> is useless except perhaps for full cold in summer.
> --

Most don't any more. Mine you can pre-set the maximum temperature. When I
take a shower, I just turn the know to hot and get in with no worries. If
someone turns on a cold water faucet, I get a slight pressure drop, but
never an increase in temperature. Mine is about 15 years old so them may
even be better now.