The Imperial measurment system and all systems derived from that one are simply moronic.
Ok, let's have some fun...
Pound "Troy": 373 gram
Pound "Avoirdupois": 453 gram
Ounce "Troy": 1/12 pound troy
Ounce "Avoirdupois": 1/16 pound avoirdupois
Dram/Drachm "Troy": 1/8 ounce try = 3.88 gram
Dram/Drachm "Avoirdupois": 1/16 ounce avoirdupois = 1.77 gram
Grain "Troy/Avoirdupois": both 64.798 miligram, that makes 1 pound troy = 5760 grains and 1 pound avoirdupois = 7000 grains
Gallon, British (imperial): 4.5 Liters
Gallon, British (wine): 3.7 Liters, the US Gallon is derived from that one
Gallon, British (beer): 4.6 Liters
Gallon, Scotish: ~13 Liter
Gallon, US (liquid): 3.7 Liters
Gallon, US (dry): 4.x Liters, derived from the British grain Gallon which some inbred retard king once defined as 8 pounds, the US dry gallon is about 7.5 pound though.
Quart: 1/4 gallon - which gallon? Don't ask me.
Quart Champagne: yet again something different, don't ask.
Quart, British (wine): no, it's not 1/4 wine gallon. Don't ask.
Quarter: it's either 25 or 28 pound. It's 1/4 of a hundredweigth and a hundredweight is either 100 or 112 pound, depending on where you are and on also depending on the alignment of the stars or something.
Pint: supposedly 1/2 quart. Sometimes. I think.
Pint, US (liquid): 0.47 Liter.
Pint, US (dry): 0.55 Liter
Pint, Britisch: 0.56 Liter
Pint, Australian (beer): 0.42 Liter
An then the is everyone's favourite: the bushel.
Bushel, British: 36.x Liter
Bushel, US: 35.2 Liter, based on the Bushel as once defined by the aformented inbred retard king
Bushel, US (real-world use): used as a weight measurment, depending on what you are weighing: wheat ~ 60 pound, cotton ~30 pound, apples ~ 50 pound and so on...
Oh, btw... Bushel "struck" or Bushel "heaped"? The difference? Just 25%...
Almost forgot... there's also a unit of measurement called "peck" which is 8 dry quarts. 4 pecks make a bushel but I have no clue whether it's a struck or heaped bushel. Maybe an American can help me out here...
Did you know that one pint is 4 gills? And a fluidram is 60 minims? And 40 rods are one furlong?
Barrel, British: 36 gallons (British) = 163 Liter
Barrel, US (oil): 42 gallons (US, liquid) = 158 Liter
Barrel, US (liquid): 126 quarts (US, liquid) = 119 Liter
Barrel, US (dry): 105 quarts (US, dry) = 115 Liter
Barrel, US (beer): 31 gallons (US, liquid) = 117 Liter
Jebus McChrist!
Just one question: WHY?!