• pH3ra@lemmy.ml
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      1 year ago

      Its easier for people to have a tailor tape for measuring rather that a caliper, so I think 13 might be the girth.
      13÷π = ~4.13cm diameter (excluding major irregularities)

      • Echo Dot
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        1 year ago

        Also the calipers were cold and caused unfavourable shrinkage.

    • qtj@feddit.de
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      1 year ago

      It’s probably meant to be circumference which would be about 4.1 cm in diameter, which is above average but not humongous.