Non-Perl solution, so feel free to ignore: there are tools available that lay down a regular track of markers every few millimetres on cloth. The ones I've seen use a toothed wheel rubbing against a stick of chalk.

No idea what they're called; stitching markers, perhaps? They look like they'd do the job for you.

--
bowling trophy thieves, die!

In reply to Re: Perl and sewing by Willard B. Trophy
in thread Perl and sewing by John M. Dlugosz

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