By this definition of the Penny Weight, the answer should be
32 nails
However, the actual number of 10d nails per pound
(according to the local Lowe's Home Center) is 74. Go figure!
This is an example of the inconsistencies rampant in 'traditional' measurements,
and a source of confusion to all quantitative studies.
Scientific measurement avoids 'bad' units like the Penny Weight at all costs,
and instead relies heavily on the standardized SI (unit) system.
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