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Date: Mon, 26 May 2014 13:03:38 +0200
From: Gabriel Paubert <paubert AT iram DOT es>
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Subject: Re: [geda-user] [OT] change line size: nevermind
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On Mon, May 26, 2014 at 12:03:56PM +0200, Kai-Martin Knaak wrote:
> Dave McGuire wrote:
> 
> > Found it...Select all traces by turning off everything else, select
> > all visible, then ":ChangeSize(SelectedLines, 7)". (for 7mils)
> 
> IIRC, the size parameter is 1/100 of a mil by default.
> 
> I recommend to use the unit parameter to reduce this kind of 
> ambiguity. To achieve 7 mil width:
>  ChangeSize(SelectedLines, 7, mil)
> 
> BTW, in section "actions" the manual still refers to 1/100 mil as the 
> internal unit of pcb
> 	http://pcb.geda-project.org/pcb-cvs/pcb.html#Actions
> 
> It only mentions "mm" and "mil". In fact, pcb deals gracefully with 
> the usual multiples, too. E.g. "m", "nm", "um", ...
> No "ly", though ;-)

As a radioastronomer, I'd rather vote for "pc" and "au", the standard
units for astronomy.

- A yoctoparsec is about 31mm or 1.2".

- a pico astronomical unit is about 150mm or 6".

Unfortunately for the photoplotter outputs, Gerber only understands
inches and millimeters.
 
	Gabriel