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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 ...

Who Invented the Ruler? - Amazon.com

www.amazon.com/Who-Invented-the-Ruler/dp/B01FNHWZMK

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 ...

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.

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

www.quora.com/Geometry-Who-invented-the-ruler-I-mean-how-it-was-possible-to-create-something-that-would-be-perfectly-straight-without-any-model

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 pulled tight ...

ELI5: When and how was the first ruler invented? : explainlikeimfive

www.reddit.com/r/explainlikeimfive/comments/1r4f56/eli5_when_and_how_was_the_first_ruler_invented/

Nov 21, 2013 ... Machines makes machines. And other machines make those machines. Eventually it must come down to a single tool. But what was it and how ...

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

americanhistory.si.edu/collections/search/object/nmah_1214954

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  ...

Ruler - Inventions

redi.imss.fi.it/inventions/index.php/Ruler

Inventor. Anonimo fiorentino. Francesco di Giorgio Martini.

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 ...

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

curiosity.com

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 Must Be The Best Ruler Ever Invented | Popular Science

www.popsci.com

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 ...