On page 173 of Making Poor Man's Guitars, the 23" scale fret template was printed at half size. Builders were instructed to scan and print at 200%. Here's an easier solution: Just download the free template here and print it out. Make sure you print the PDF at 100% (actual size) with no scaling.
making-poor-mans-guitars-23-inch-fret-scale-template
.pdf
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