On Tue, 15 Jul 2003 08:36:25 +0100, Colin Blackburn
wrote:

Now, the one thing I have learnt is that category SI doesn't exist, they
(the SAE) went straight from SH to SJ to avoid any confusion with the SI
of SI units.

That's my point. SH is the best you can make out of dinosaurs. To get
to SJ et al. you need synthetics.

The notion of the SAE worrying about SI is quite bizarre, as it is.