[snip]A pint's a pound the world around is one I picked up in grade school[/snip]
Except it isn't, anywhere, let alone the world around.
The, naturally superior, British pint of water (at 568.26125ml exactly) is ≈ 1
1/
4 lb, the weedy American pint (at 473.176473 ml exactly) is ≈ 1 lb 0.69 oz*. Which all goes to show that you should not trust school teachers.
The British school teacher's dictum, that a gallon (eight proper, full strength, Imperial pints) weighs 10 lb is much closer to the truth, being only 0.22% in error.
[The 1959 international pound of 0.453 592 37 kg has been used in all cases, which is the current lb in the US and was the current lb in the UK from 1963 until lbs ceased to be an official unit.]
* I could have used drachms (
1/
16 oz) and/or grains (
1/
7000 lb) instead of decimal ounces, but nobody, even those using ounces on a daily basis know what the heck those are (except possibly for people who deal with bullets day in and day out, which for some reason are still regularly referred to by their weight in grains even when the calibre in use is inherently metric. e.g. I have shot 7.62mm Lapua 168 gn target rounds.). Just for the record it's 1 lb 0 oz 11 dm 1.45 gr for the 'merkin pint and the British pint weighs in at 1 lb 4 oz 0 dm 19.61 gn.