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Why is it important to measure accurately? - PowerPoint PPT Presentation


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Why is it important to measure accurately?. Measuring in English (American Standard System). Using a Ruler. Where did it come from?. Why 12 inches?. The King’s Foot. One Foot. The King’s Foot. One Foot. Too big for some things. ...So they used the length of the King’s first knuckle.

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Presentation Transcript
the king s foot1

The King’s Foot

One Foot

Too big for some things...

so they used the length of the king s first knuckle

...So they used the length of the King’s first knuckle

One Inch

But that was too big for some other things...

why 12 inches not 10 or 13

Why 12 inches not 10 or 13?

Simply because it took 12 lengths of his first knuckle to equal his foot.

the ruler game
The Ruler Game
  • http://www.rsinnovative.com/rulergame/index.html