MILLIMETER CENTIMETER, METER, KILOMETER; GRAM, KILOGRAM; MILLILITER, LITER; USA NOT USING METRIC; NANOMETER, MICROMETER; METRIC TONNE; LIBERIA AND MYANMAR NOT USING METRIC; MEGAMETER, GIGAMETER; HECTARE (10000 SQUARE METERS); DECIMETER, DECAMETER, HECTOMETER; CENTILITERS, DECILETERS; MYRIAMETER, HECTOKILOMETER; USA TRIED TO GO METRIC IN 1975; METRIC TONNE WAS SUPPOSED TO BE MEGAGRAM; RONNA AND QUETTA ARE NEW PREFIXES; BACKWARDS ALPHABET PREFIXES; KIBIMETER = 1024 METERS; FRENCH REVOLUTION; METRIC TIME (10 HR, 100 MIN, 100 SEC); THE METER CHANGED DUE TO EARTH'S SHAPE; KILOSECONDS, MEGASECONDS, GIGASECONDS