Metric System Scientists
1586: Simon Stevin (1548  1620), Flemish mathematician: proposed that all multiples and divisions of the base measurement units were factors of the power of ten.
1670: Gabriel Mouton (1618  1694), French abbot, mathematician and astronomer: proposed that all derived units use a common set of prefixes for each multiple. Thus the prefix kilo is used for mass (kilogram) or length (kilometre) both indicating a thousand times the base unit.
1668: John Wilkins (1614  1672), English clergyman and natural philosopher: proposed a decimal system of measure similar to the modern metric system and a "seconds pendulum" with a halfperiod of one second as the unit of length.
1860: James Clerk Maxwell (1831  1879), Scottish physicist and mathematician: proposed three base units  length, mass and time that from them all other units of measure, called derived units, were defined in terms of the base units.
1824: Nicolas Clement (1779–1842), French physicist and chemist: defined the calorie unit.
1862: William Thomson, British physicist and engineer, James Clerk Maxwell, Scottish physicist and James Prescott Joule, English physicist: suggested that units of electrical energy must have the same units as units of mechanical energy.
1888: Heinrich Hertz (1857  1894), German physicist: verified Maxwell's Equations and in so doing realised that the CGS system of electromagnetic units to were related to the CGS system of electrostatic units.
1861: Charles Bright, British electrical engineer and Latimer Clark, English electrical engineer: proposed the names of ohm, volt, and farad in honour of Georg Ohm, Alessandro Volta and Michael Faraday respectively for the practical units based on the centimetregrammesecond absolute system.
1910: Charles Edouard Guillaume (1861  1938), Swiss physicist advanced the development of precision instruments.
Calculators and Convertors
Conversions  asknumbers.com
Mechanical Engineering Calculators  Mecheng Computing
Metric & Imperial Conversion  FPSI French Property
Measurements  AAA Math
Metric Conversions
Metric Converter  allmath.com
US/Metric Conversion Tables  allmath.com
Conversion Calculator  infoplease.com
Convertme.Com
Martindale's Calculators OnLine Center
Calculators  OnlineConversion.com
Calculators  lii.org
Distance Calculator Between Cities and Countries  mapcrow.info
Metric System Resources
Metric System  Wikipedia
The Metric System  KryssTal
Go Metric  U.S. Metric Association (USMA)
The Metric System
A Dictionary of Units of Measurement
Metric System Timelines
A Chronology of the SI Metric System  USMA
The Metric System on Stamps
Instruments and Measurements  Buffalo University
