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And if that is not enough test lines there is:
http://www.vinland.com/USAF-1951.html
It includes slightly offset lines which is the worst case condition.
Bertho
From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] On Behalf Of DJ Delorie
Sent: Monday, April 14, 2014 14:32
To: Homebrew_PCBs@yahoogroups.com
Subject: Re: [Homebrew_PCBs] Test pattern for tuning UV
James <bitsyboffin@...> writes:
> I couldn't find a simple small test pattern in a usable (gerber) format,I have more if you need them: