When was the ruler invented?

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  • When was the ruler invented?


A ruler, sometimes called a ... Anton Ullrich invented the folding ruler in 1851. Frank Hunt later made the flexible ruler in 1902. Curved and ...
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When was the Ruler invented? raman December 13, ... In the year 1851, the folding ruler was invented by Anton Ullrich. Technology . Post navigation
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Around 1622, the circular and rectangular slide rule was invented by Episcopalean minister William Oughtred. ... History of the Slide Rule
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History of Mathematics : Who Invented the Ruler? eHow. Subscribe Subscribed Unsubscribe 507,180 507K. Loading... Loading... Working... Add to.
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Educational Tools : Who Invented the Ruler? Added by Wanda Collins on March 13, ... The ruler was invented in the 16th century by William Bedwell, ...
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Weights and Measures . 2. ... Weights and measures were among the earliest tools invented ... The first calibrated foot ruler, a measurement tool, was ...
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