METRIC  SYSTEM
Standard for all Measurements - adopted 1866 U.S.A.
Tom  Whitney    256-6234        E-Mail
LENGTH  -  METER
Distance Light travels in vacuum in 1/299,792,450 of second
TIME  -  SECOND
Duration of 9,192,631,770 cycles of a specified
Radiation Transition of Cesium-133 atom
MASS  -  KILOGRAM
Cylinder of Platinum-Iridium at National Bureau of Standards.
TEMPERATURE  -  KELVIN
1/273.16th Triple Thermo Dynamic Temperature point of water
 (interface of Solid, Liquid, Gas) - .01 Celsius,  32.02 Fahrenheit).
ELECTRIC CURRENT  -  AMPERE
Current maintained in 2 parallel wires 1 meter apart in free space
producing 2 x 10,000,000 Newtons/Meter.
LUMINOSITY  -  CANDELA
Intensity of 1/600,000 sq. m of cavity at Platinum
Freezing Temperature - 2,042 K.
AMOUNT  -  MOLE
Substance in Elementary Entities as atoms in .012 kg Carbon-12.
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LINEAR
millimeter-mm,  centimeter-cm,  decimeter-dm,  meter-m,
dekameter-dam,  hectometer-hm, kilometer-km
VOLUME
milliliters-ml,  centilliter-cl,  deciliter-dl,  liter-l,
dekaliter-dal,  hectoliter-hl,  kiloliter-kl
WEIGHT
milligram-mg,  centigram-cg,  decigram-dg,  gram-g,
dekagram-dag,  hectogram-hg,  kilogram-kg, 
1,000 kg = metric ton