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0.0000000280 square perches is about one-one-hundredth as big as a Nailhead
In other words, it's 0.00911 times the size of a Nailhead, and the size of a Nailhead is 109.80 times that amount.
(for 11-gauge wire nai)
An 11-gauge nailhead measures 0.0000030740 square perches. Nails have been used since ancient times; archaeologists have discovered Ancient Egyptian nails that are over 5,000 years old.
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