Imperial vs Metric

There are two different systems of measurements in the industry
  • Metric SI
  • Imperial

Canada uses the Metric system since around 1965. Before that date, we had been using the Imperial system.
Countries still officially using the Imperial System vs Metric System
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The Metric System SI:
  • It is based on a decimal system (ie. powers of ten). Therefore, it simplifies calculations by using a set of prefixes
    • "milli" means 10^-3 or 0.001
    • "centi" means 10^-2
    • "deci" means 10^-1
    • "deca" means 10^1
    • "hecto" means 10^2
    • "kilo" means 10^3 or 1000
  • It is used by most other nations of the world, and therefore, it has commercial and trade advantage

The Imperial System:
  • Used in majority by the US
  • Much more complicated than the Metric System
  • The units come from body parts
    • Twelve inches = one foot
    • Three feet = one yard
    • Five and a half yards = one rod, pole or perch
    • Four poles = one chain
    • ten chains = one furlong
    • Eight furlongs = one mile or 5280 feet
  • Inches are divided using many "bases" 1/2 1/4 1/8 1/16 1/32




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