Quote:
Originally Posted by Mike
Did you ever watch The Young Ones , as Nigel would say slowly " H-e-a-v-y!"
A 3psi cap is + 3psi over normal atmospheric pressure, and is a relative measure.
By comparison Bar is an absolute. So a 1 Bar cap is = normal atmospheric pressure (as in 1000 millibars is normal )
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Thanks Mike.
A bit of clarity at last. I've just found this and started to read it.
http://en.wikipedia.org/wiki/Pressure_measurement
But then the fog started to descend again so I stopped......................!!
N.