|
£.s.d. combined with avoirdupois units of mass and imperial units of length resulted in a deftness of mental arithmetic that you'd be hard pressed to find today. My mother could tell the man who sliced the ham how much he should charge for the 7¼ ounces of 9s.6½d ham as he was weighing it, ditto the cheese etc, and when she was finished - the total.
|