"Howard" <hj.payne@...> writes:
calibrate exposure times. I did some big writeups about this a few
weeks ago; you can buy them from www.stouffer.net for about $7 plus
S&H.
> Anyone know how long to expose this make of board ?The tool for this job is a "step transmission gauge" which helps you
calibrate exposure times. I did some big writeups about this a few
weeks ago; you can buy them from www.stouffer.net for about $7 plus
S&H.