D
Digitonomy
Guest
# is indeed used for pound as a unit of weight. Just not very often anymore. Here’s a cite:
While we’re talking about pounds, the word “sterling” seems to originate from the Middle English version of star + ling ≈ little star, after the image on silver pennies from the Norman age.It is also known as a “number sign”, since it stands for the word number in such places as in “apartment #2”. It is referred to as a pound sign because it was in some American commerce usage (back in the longhand days) to stand for the unit of weight (“25# flour @15¢/#”).