A ruler can be defined as a tool or device used to measure length and draw straight lines. A ruler is used to measure the length in both metric and customary units. The rulers are marked with standard distance in centimeters in the top and inches in the bottom and the intervals in the ruler are called hash marks.
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Answer:
A ruler can be defined as a tool or device used to measure length and draw straight lines. A ruler is used to measure the length in both metric and customary units. The rulers are marked with standard distance in centimeters in the top and inches in the bottom and the intervals in the ruler are called hash marks.