Weights and Measures


 * ENERGY AND MOTION
 * UNIT: WHAT IT MEASURES
 * bar/barye/pascal: pressure
 * dyne/newton/poundal: force
 * erg/joule/kilowatt-hour: work or energy
 * knot/mach: speed
 * watt: power
 * HEAT, LIGHT, AND SOUND
 * UNIT: WHAT IT MEASURES
 * angstrom: wavelength of light
 * calorie/therm: heat
 * candela: luminous intensity
 * decibel/phon: loudness
 * fresnel/hertz: frequency
 * kelvin: temperature
 * lumen: luminous flux, the rate of flow of luminous energy
 * ELECTRICITY AND MAGNETISM
 * UNIT: WHAT IT MEASURES
 * ampere: electric current
 * coulomb: electric charge
 * farad: electric capacitance, the capacity to store an electric charge
 * gauss/tesla: magnetic flux density, the direction and magnitude of magnetic force
 * henry: electric inductance, the property of enabling an electromagnetic force to be
 * generated
 * maxwell/weber: magnetic flux, the strength of a magnetic field through an area
 * oersted: magnetic field strength
 * ohm: electric resistance
 * siemens: electric conductance
 * volt: electric potential and electromotive force
 * ATOMIC PHYSICS
 * UNIT: WHAT IT MEASURES
 * becquerel/curie: radioactivity
 * dalton/AMU/atomic mass unit: mass of an isotope
 * rad/gray: energy absorbed from radiation
 * rem/REM: radiation dose
 * roentgen: X-rays or gamma rays
 * METRIC UNITS
 * UNIT: VALUE
 * grade: one-hundredth of a right angle
 * gram: about 0.002 pound avoirdupois
 * hectare: 100 ares, or 2.47 acres
 * micrometer/micron: 10 to the 6th meters, about 1/25,000 inch
 * stere: volume equivalent of 1 cubic meter
 * ton or metric ton: 10 quintals or 0.98421 long tons
 * IMPERIAL UNITS: LINEAR MEASURE
 * UNIT: VALUE
 * 1 cable: about 608 feet
 * 1 chain: 4 rods, 22 yards
 * 1 fathom: 6 feet
 * 1 furlong: 10 chains, 220 yards
 * 1 hand: 4 inches
 * 1 league: 3 nautical miles
 * 1 rod/1 pole/1 perch: 5 1/2 yards
 * IMPERIAL UNITS: LIQUID MEASURE
 * UNIT: VALUE
 * 1 barrel: 31 1/2 to 35 gallons
 * 1 firkin: 9 gallons
 * 1 fluid drachm: 60 minims 1/8 fluid ounce
 * 1 gill/noggin: 5 fluid ounces, 1/4 pint
 * 1 hogshead: 2 barrels
 * 1 minim: 1/480 fluid ounce
 * IMPERIAL UNITS: DRY MEASURE
 * UNIT: VALUE
 * 1 bushel: 4 pecks
 * 1 peck: 8 quarts
 * IMPERIAL UNITS: JEWELERS' WEIGHTS
 * UNIT: VALUE
 * 1 carat: 1/24 (4.1667%) gold
 * 1 grain: 1/480 ounce troy
 * 1 ounce troy: 1/12 pound troy, 1.097 ounces avoirdupois
 * IMPERIAL UNITS: AVOIRDUPOIS WEIGHTS
 * UNIT: VALUE
 * 1 dram: 27 11/32 grains, 1/16 ounce
 * 1 drachm: 3 scruples
 * 1 scruple: 20 grains
 * ARCHAIC AND FOREIGN UNITS
 * UNIT: VALUE
 * barleycorn: 1/3 inch
 * catty/kati: about 1 1/3 pounds (China)
 * crore: 10 million (India)
 * cubit: 18 to 21 inches
 * ell: 45 inches (cloth)
 * hide: 100 to 120 acres
 * kilderkin: about 18 gallons
 * lakh: 100,000 (India)
 * maund: about 82 pounds (India)
 * morgen: 2.116 acres (South Africa)
 * mutchkin: 0.9 pint (Scotland)
 * picul: 133.33 pounds (China)
 * pipe: 105 gallons (wine)
 * pood: 36.11 pounds (Russia)
 * rood: 1/4 acre
 * shekel: about 1/2 ounce (ancient Hebrew)
 * span: 9 inches; tip of thumb to tip of little finger or an extended hand
 * tael: usually 1 1/3 ounces (Asia)
 * tierce/terce: 42 wine gallons; about 33 gallons
 * verst: 0.6629 miles (Russia)
 * virgate: about 30 acres, about 1/4 acre