SmokingMirror
Contributor
Bo-jan:In Europe we use different measuring units for pressure. A full tank is 200 bar (1 bar being about the equivalent of atmospheric pressure at sea level).
Indeed. I regularly dive the UK, and the standard here - at least at the LDS with whom I dive - is to ignore the units (so 1-9) altogether, and use the hands (or hand singular, depending on the amount) to display the tens, with the T sign (a horizontal hand atop a vertical one) used after any indicated number to show a hundred.
So for a full tank of 200 bar, you would sign with two fingers (doesn't matter which two, as long as it's clear), then make the T. 135 would be represented by one finger, T, three fingers (actually signalling 130, but the units aren't counted).