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A comment on Hand Scraping a Truly Flat Plane (1908) [pdf]. Parent comment

Re:Hand Scraping a Truly Flat Plane (1908) [pdf] by patrickyeon on Friday April 17, 2020 @12:41AM (#22896253)
Diagonally. The length of a side is considerably shorter (1/sqrt(2) times shorter, actually) than the diagonal.
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