Re: gEDA-user: footprint measurement units naming

[phil@xxxxxxxxxxxxxxxxxxxxxxxx]

Diversity of systems, even for measurement is a reminder that these things we
depend on are completely arbitrary.  So I'm fine with having two systems.

It's through familiarity that they become meaningful and useful.  

So is there a prefix describing a unit of 10^-5 for me to get familiar with?

Phil




"Samuel A. Falvo II" <sam.falvo@xxxxxxxxx> wrote:

> On 8/20/05, phil@xxxxxxxxxxxxxxxxxxxxxxxx <phil@xxxxxxxxxxxxxxxxxxxxxxxx>
> wrote:
> > "centimil" and "centithou" both mix imperial and metric units and are thus
> > quite illogical.  Any other ideas on what I should be calling these
things?
> > 
> > Phil Taylor
> 
> The very concept of a "mil" is itself a mixture of metric and imperial
> units -- 1 mil = 0.001 inches = 1 milli-inch.
> 
> Since the concept of a mil "metricizes" the imperial unit of an inch,
> there is no disgrace in using metric prefixes in front of it.  I
> rather like the idea of defining a foot as 12 kilomils.  ;D
> 
> I just wish the industry at large would just drop imperial units
> all-together, and adopt SI units once and for all.  But, that won't
> happen until long after I die.  :)
> 
> --
> Samuel A. Falvo II
>