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Continue to ChatLining paper with a round ruler or rolling ruler? https://graphicarts.princeton.edu/2020/12/20/lining-paper-with-a-round-ruler-or-rolling-ruler/
Lining paper with a round ruler or rolling ruler? https://graphicarts.princeton.edu/2020/12/20/lining-paper-with-a-round-ruler-or-rolling-ruler/