What with the cold weather settin in went out to get a new tyre pump and got me one of these babies,a michellin electric pump includes a removable pressure gauge, got from halfords on offer for 29.99, the gauge alone is 16.99, bargain!
Is it mains or 12 volt or both cant tell from picture ? sounds a bargain though.
Just saying posted
runs off 12v from car lighter
thats me fooked then, my cars blown up 
still could always look for an adaptor to wire in bike system shouldnt be to hard 