Also I have never heard of a "Hundredweight"
You have now: https://www.google.co.uk/search?q=hundredweight
"A hundredweight is a unit of measurement for weight used in certain commodities trading contracts. In North America, a hundredweight is equal to 100 pounds and is also known as a short hundredweight. In the United Kingdom, a hundredweight is 112 pounds and is also known as a long hundredweight."
The story, (which may be apocryphal), I have heard about the origin of the 112lb "hundredweight", is that Millers were ripping farmers off, by retaining larger & larger amounts of the milled grain product, with the farmer getting less & less.
For example,out of 100lb of flour,the farmer often only got around 50lb.
The farmers complained to the King, who ruled that the milled product would be measured in amounts of 112lb--from this,the farmer got 100lb,& the Miller,12lb.
and similarly
"A US liquid gallon of water weighs about 8.34 pounds or 3.78 kilograms at 62 °F (17 °C), making it about 16.6% lighter than the imperial gallon. There are four quarts in a gallon, two pints in a quart and 16 US fluid ounces in a US pint, which makes the US fluid ounce equal to 1?128 of a US gallon."
There has been a certain amount of "re-imperialisation by stealth" here in Oz,as the "trendoids" like to buy their beer in pints so they can pretend they are in London.
I have a nasty suspicion that they are getty sold wimpy US "pints", instead of the full, red blooded Pommy ones!
Another thing that weirds me out a bit is the TV tax. In the US you buy a TV and you don't need to pay for anything but service and power, but in Germany and most of europe, it's something like 100 euro a year or so. But that's very trivial.
It means we can get good unbiassed television programmes without adverts. In the UK a 1 hour programme contains ~55 minutes of content; in the US your eyeballs/brain are sold to the highest bidder for 1/3 of the time. Unless, of course, you pay money to watch channel X and more money to watch channel Y and more money to watch channel Z.
We used to have TV & Radio Receiving licences in Australia, too,until it was discovered that the cost of running & "policing" the rules cost more than the returns from the licences.
The ABC is now just financed from normal tax.