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Ruler

en.wikipedia.org/wiki/Ruler

A ruler, sometimes called a rule or line gauge, is an instrument used in geometry, technical .... Anton Ullrich invented the folding ruler in 1851. Frank Hunt later ...

Who invented the ruler? | Reference.com

www.reference.com/history/invented-ruler-13a711e49ccd0042

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  ...

www.ask.com/youtube?q=Who Invented the Ruler?&v=fMECPQ3Ae94
Jan 3, 2009 ... The ruler was invented by different civilizations of different time periods. Discover the origin of the ruler with tips from a mathematics instructor in ...
www.ask.com/youtube?q=Who Invented the Ruler?&v=zgkketAEaEk
Jun 7, 2009 ... The ruler was invented in the 16th century by William Bedwell, and it is used for drawing straight lines and taking measurements. Use a ruler for ...

History Of Mathematics : Who Invented The Ruler? From ... - Curiosity

curiosity.com/paths/history-of-mathematics-who-invented-the-ruler-ehow/

The ruler was invented by different civilizations of different time periods. Discover the origin of the ruler with tips from a mathematics instructor in ...

When was the Ruler invented?

www.whenwasitinvented.org/when-was-the-ruler-invented/

... the Ruler invented? Prior to 1500 B.C, the Indus Valley Civilization used ruler made of ivory. In the year 1851, the folding ruler was invented by Anton Ullrich.

History of Length Measurement : Factsheets : Educate + Explore ...

www.npl.co.uk/educate-explore/factsheets/history-of-length-measurement/

... into signatory countries. The use of metric weights and measures in trade only became lawful in Britain in 1897. Scientist measuring wavelength with a ruler ...

History of Rulers @ Super Beefy

superbeefy.com/history-of-rulers/

Jul 25, 2014 ... Using a ruler or a tape measure would be a lot easier than figuring out this problem in your head. In fact, much of our commercial life would be ...

This Must Be The Best Ruler Ever Invented | Popular Science

www.popsci.com/technology/article/2013-08/must-be-best-ruler-ever-invented

Aug 1, 2013 ... If you're still using a basic ruler--the kind that's a stick with notches on it--allow us to introduce you to the future, where our rulers will be crazy ...

Weights and Measures: History of Measurement Tools - Inventors

inventors.about.com/od/mstartinventions/a/Measurement.htm

Weights and measures were among the earliest tools invented by man. ... The first calibrated foot ruler, a measurement tool, was invented in 1675 by an ...

Answer
Who Invented the Ruler?
The ruler was invented by different civilizations of different time periods. Discover the origin of the ruler with tips from a mathematics instructor in this free video on math history.... More »
Difficulty: Moderate
Source: www.ehow.com
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Video: History of Mathematics : Who Invented the Ruler ...

www.watchknowlearn.org

The ruler was invented by different civilizations of different time periods. Discover the origin of the ruler with tips from Steve Jones who uses a white board to aide ...

Flexible Ruler Invented by Frank G. Hunt | National Museum of ...

americanhistory.si.edu

Flexible Ruler Invented by Frank G. Hunt. Description: Frank G. Hunt of Buffalo, N.Y., designed this flexible steel rule for drawing straight lines on curved surfaces  ...

Geometry: Who invented the ruler? I mean how it was possible to ...

www.quora.com

There are several ways to get something very straight. The surface of a still body of water, for example, will be almost perfectly level. A length of string ...