[PATCH] Add more common cylinders' sizes.

[Dirk Hohndel]

On Tue, 2014-03-04 at 22:42 +0100, Giuseppe 'ferdy' Miceli wrote:
> >>>>> "ferdy" == Giuseppe 'ferdy' Miceli <ferdy at ferdy.it> writes:
> 
>     ferdy> 18L bottles are fairly common (at least in Italy).  Likewise,
>     ferdy> D10 and D15 are for technical divers.
> 
> speaking of which, i miss the reason why we specify the working pressure
> for cylinders. does anyone mind to enlighten me?

That is required to make sense of the idiotic imperial sizes. For metric
sizes we don't need working pressure.

/D