text: # Multipliers
  MILLI = 1e-3
  CENTI = 1e-2
  KILO = 1e+3
  MEGA = 1e+6
  GIGA = 1e+9
  
  # Length
  METER = 1.0
  CENTIMETER = CENTI * METER
  KILOMETER = KILO * METER
  
  # Mass
  KILOGRAM = 1.0
  GRAM = MILLI * KILOGRAM
  
  # Time
  SECOND = 1.0
  
  # Force
  NEWTON = KILOGRAM * METER / SECOND ** 2
  
  # Pressure
  PA = KILOGRAM / METER * SECOND ** 2
  GPA = GIGA * PA
  