LF: Spelling of units

["Dick Rollema" <d.w.rollema@freeler.nl>]

Dear OM,

The following matter has nothing to do with LF but as former editor and
corrector of VERON magazine Electron I nevertheless take the
liberty to beg your opinion on it.

In our country units that are derived from the names of scientists are
written with a lower case letter; for instance volt, ampère, watt, etc.;
not Volt, Ampère, Watt. When abbreviated we use a capital letter, so V,
A, W etc. We also write "5 ohm, not 5 Ohms" (no plural). 
And we insert a space between the number and the unit: "3 V and not
3V". 

I wonder what the rules are in other countries, inside [including the
UK  :-)]  and outside Europe because I see a lot of variations
in spelling of units on the reflector.

73, Dick, PA0SE