White House Workshop":22uf0lfp said:
So how do you figure this:
In the UK - a pint of water weighs a pound and a quarter
In the US - a pint of water weighs a pound
Maybe the weights are different, too?????
Well, a pound is a pound, but there's 128 liquid ounces in a US pint and 160 in an Imperial pint, so right away we know there's something askew with that 4 liquid ounce difference between a US pint and an Imperial pint. This translates into the 8 lb US gallon and the 10 lb Imperial gallon.
"1 US fluid ounce = 29.5735295625 millilitres ≈ 1.041 imperial fluid ounces
1 imperial fluid ounce = 28.4130625 millilitres ≈ 0.961 US fluid ounce" (Wikipedia, The Free Encyclopedia (2008)
Comparison of the imperial and US customary measurement systems, [Online] Available at:
http://en.wikipedia.org/wiki/Comparison ... nt_systems [Accessed, January 28, 2008])
Now, when you get to tons it gets even more whacky. A British ton is 20 hundredweight (cwt) or 2240 lbs at 112 lbs per cwt.
The American ton is also 20 cwt, but it comes in at 2000 lbs! Huh you may go. In their cwt they have 100 lbs.
To eliminate all confusion (sic, and ha bloody ha) these two types of ton are the long ton and the short ton. I bet you can work out which is which!
I think I'll miss out the 1000 kg tonne, aka metric tonne, altogether for now.
White House Workshop":22uf0lfp said:
On to the litre conversions as quoted - 4.54 is 18% bigger than 3.85, which is neither 20% or 25%. Are American litres different?
I provided a wrong figure from memory. I got the Imperial gallon right at 5.54 litres: it's actually 5.546 litres, but I just use 5.54 as close enough for most things. The US gallon is 3.785 litres, not 3.85 as I said earlier. My error, but I don't always remember all the conversions spot on, and jings I've probably spent too much of my life juggling between different systems of measure, ha, ha. Slainte.