History of rulers and yardsticks, History

A ruler is an instrument that can measure distances or draw straight lines in printing, geometry, technical drawings, architectural plans and many other things. The metric system of measurement was invented in France for easier measuring instead of the English model. Most countries of the world had adopted the metric system by the end of the 18th century.

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A Laser 'Yardstick' For Space and Time Hailed by Scientists - The New York Times

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History of rulers and yardsticks, History

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The Yardsticks by Which We Measure Rus in: Russian History Volume 46 Issue 2-3 (2019)

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Ruler - Wikipedia