Oh, so many measures ...
Cubit, Hand, US Gallon, Imperial Gallon, US Ton/short ton (2000 lbs), Imperial or long ton (2,240 lb), and lets not forget 'Bakers dozen'!!
Not long after metrication in Australia, I was at the hardware store and overheard a builder asking for a quantity of '3 metre 4x2s' .....
Mike
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