1 foot head = 0·434 lb. per square inch.
1 lb. per square inch = 2·31 ft. head.
1 imperial gallon = 277·274 cubic inches.
1 imperial gallon = 0·16045 cubic foot.
1 imperial gallon = 10 lb.
1 cubic foot of water = 62·32 lb. = 6·232 imperial gallons.
1 cubic foot of sea water = 64·00 lb.
1 cubic inch of water = 0·03616 lb.
1 cubic inch of sea water = 0·037037 lb.
1 cylindrical foot of water = 48·96 lb.
1 cylindrical inch of water = 0·0284 lb.
A column of water 12 in. long 1 in. square = 0·434 lb.
A column of water 12 in. long 1 in. diameter = 0·340 lb.
Capacity of a 12 in. cube = 6·232 gallons.
Capacity of a 1 in. square 1 ft. long = 0·0434 gallon.
Capacity of a 1 ft. diameter 1 ft. long = 4·896 gallons.
Capacity of a cylinder 1 in. diameter 1 ft. long = 0·034 gallon.
Capacity of a cylindrical inch = 0·002832 gallon.
Capacity of a cubic inch = 0·003606 gallon.
Capacity of a sphere 12 in. diameter = 3·263 gallons.
Capacity of a sphere 1 in. diameter = 0·00188 gallon.
1 imperial gallon = 1·2 United States gallon.
1 imperial gallon = 4·543 litres of water.
1 United States gallon = 231·0 cubic inches.
1 United States gallon = 0·83 imperial gallon.
1 United States gallon = 3·8 litres of water.
1 cubic foot of water = 7·476 United States gallons.
1 cubic foot of water = 28·375 litres of water.
1 litre of water = 0·22 imperial gallon.
1 litre of water = 0·264 United States gallon.
1 litre of water = 61·0 cubic inches.
1 litre of water = 0·0353 cubic foot.
─────────────────────────────────────────────────────────────────────────
EQUIVALENTS OF POUNDS AVOIRDUPOIS.
─┬───────┬────────────┬────────────────┬────────────────┬────────────────
│ 10 │ 100 │ 1000 │ 10,000 │ 100,000
─┼───────┼────────────┼────────────────┼────────────────┼────────────────
│qr. lb.│cwt. qr. lb.│ton cwt. qr. lb.│ton cwt. qr. lb.│ton cwt. qr. lb.
1│ 0 10│ 0 3 16│ 0 8 3 20│ 4 9 1 4│ 44 12 3 12
2│ 0 20│ 1 3 4│ 0 17 3 12│ 8 18 2 8│ 89 5 2 24
3│ 1 2│ 2 2 20│ 1 6 3 4│ 13 7 3 12│133 18 2 8
4│ 1 12│ 3 2 8│ 1 15 2 24│ 17 17 0 16│178 11 1 20
5│ 1 22│ 4 1 24│ 2 4 2 16│ 22 6 1 20│223 4 1 4
6│ 2 4│ 5 1 12│ 2 13 2 8│ 26 15 2 24│267 17 0 16
7│ 2 14│ 6 1 0│ 3 2 2 0│ 31 5 0 0│312 10 0 0
8│ 2 24│ 7 0 16│ 3 11 1 20│ 35 14 1 4│357 2 3 12
9│ 3 6│ 8 0 4│ 4 0 1 12│ 40 3 2 8│401 15 2 24
─┴───────┴────────────┴────────────────┴────────────────┴────────────────