(See Sec. 79)
(1) Length: | |
1 inch = | =0.0254 metre |
1 foot = | =0.3048 metre |
1 yard = | =0.9144 metre |
1 mile = | =1609.344 metres |
1 nautical mile (UK) | = 1853.18 metres |
| For Survey of India only |
I foot | = 0.3047996 metre |
(2) Area | |
1 square inch | =0.00064516 square metre |
1 square foot | =0.09290304 square metre |
1 square yard | =0.83612736 square metre |
1 square mile | = 2 589 988.110 336 square metres |
| For Survey of India only |
1 square foot | =0.092 903 square metre |
1 acre | =4046.8561 square metres |
= 0.404 685 61 hectare | |
(3) Volume: | |
1 cubic inch | =0.000 016 387 064 cubic metre |
1 cubic foot | =0.028 316 846 592 cubic metre |
1 cubic yard | =0.764 554 857 984 cubic metre |
1 gallon (UK) | =0.004 546 087 cubic metre |
1 gallon (USA) | =0.003 785 411 784 cubic metre |
1 bushel (USA) | |
(2 150.42 cubic inches) | =. 0.035 239 070 17 cubic metre |
1 barrel for petroleum | = 0. 158 987 294 928 cubic metre |
1 acre-foot | = 1233.482 cubic metres |
(4) Mass: | |
1 grain | =0.000 064 798 91 kilogram |
1 tola | = 0.01 1 663 803 8 kilogram |
1 seer | = 0.933 104 304 kilogram |
1 maund | =37.324 172 16 kilograms |
1 ounce (troy) | = 0.031 103 476 8 kilogram |
1 pound (avoirdupois) | = 0.453 592 37 kilogram |
1 hundred weight (UK) | = 50 802 345 44 kilograms |
1 hundred weight (USA) | = 45 359 237 kilograms |
1 ton (UK) | = 10 6.046 908 8 kilograms |
1 ton (USA) | = 907.184 74 kilograms |
(5) Temperature | |
1 degree Fahrenheit (unit) | = 5/9 kelvin or degree (celsius) |
temperature in degree | |
Fahrenheit (toF) | = 5/9 (toF+459.67) kelvins
= 5/9 (toF-32) degree celsius |
(6) Force: | |
1 pound-force | =4.448 221 615 260 5 newtons |
1 poundal | =0. 138 254 954 376 newton |
(7) Pressure: | |
1 barometric inch of mercury | =3 386.388 640 341 pascals |
1 inch of water | =249.088 91 pascals |
(8) Energy : | |
1 British thermal unit | =1055.05585262 joules |
1 foot-pound-force | =1.35 817 948 331 400 4 joules |
(9) Power: | |
1 horse power (UK) | =745.699 871 582 270 22 watts |
1 horse-power (European) | =735.498 75 watts |
1 ton of refrigeration | =3516.852 842 67 watts |
