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Who invented the ruler?

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Quick Answer

The invention of the ruler dates back to ancient civilizations, such as the Greeks and Egyptians. Used to make measurements in a straight line, the first excavated rulers were often made from wood or ivory.

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Who invented the ruler?
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The first known rulers appeared to have markings that had similar meanings to our currently used imperial and metric systems. The modern 12-inch ruler used today was supposed to equal the length of a man's foot, while the width of a man's thumb was equal to 1 inch. The rulers we use today are often made from metal or plastic and can be bent to accommodate objects that are not completely straight.

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