In message , Antonio
Vernucci writes
Well, "m" is reserved for "milli". Using a QWERTY typewriter (remember
them?) or ASCII computer keyboard IMO "u" is the better substitute for
"micron". But "p" and "n" are on all those keyboards. So there was/is
no need for the above "mmF" construct, or awkward notations like .005uF
when 5nF would say it much nicer.

73, Eddi ._._.
--

Yes, but for some reason 5nF was not of common use before about 25
years ago. .005uF or 5kpF was the standard, who knows why..

For some reason, Americans find the British use of 'puff' and 'puffs'
(the colloquial 'pronunciation' of 'pF') highly amusing!
--
Ian