bar -> PSI

[richard bies <bies@xxxxxxxxxxxxxxxxxxx>]

<Engineering> approach:

You are going to be measuring with a typical tire gague?  (And you are
filling to ordinary tire pressures, doing the math in your head?)

Make it 1 bar = 15 psi.

(You have an exceptional gague if the discrepancy from definitional
accuracy shows...)

r.m.bies

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