FUNDAMENTAL DIMENSIONS Unit Systems CP-01 Page 4 Rev. 0 The MKS system is used primarily for calculations in the field of physics while both the MKS and CGS systems are used in the field of chemistry.   The units for each of these systems are shown in Tables 2 and 3 below. TABLE 2 MKS Units of Measurement Length Mass Time Millimeter Milligram * Second * Meter Gram Minute Kilometer * Kilogram Hour Day Month Year * Standard unit of measure TABLE 3 CGS Units of Measurement Length Mass Time * Centimeter Milligram * Second Meter * Gram Minute Kilometer Kilogram Hour Day Month Year * Standard unit of measure