Ruler definition of Ruler in the Free Online Encyclopedia.

ruler

1. a person who rules or commands

2. a strip of wood, metal, or other material, having straight edges graduated usually in millimetres or inches, used for measuring and drawing straight lines

ruler [′rül·ər]

(engineering)

A graduated strip of wood, metal, or other material, used to measure lines or as a guide in drawing lines.

Ruler

a tool used for geometric constructions, linear measurements, and calculations. A scale (or scales) is usually marked on a ruler, the value of which depend on the purpose of the ruler. For convenience, some rulers have reference data (magnitudes of physical values, multiplication tables) or special attachments. For instance, rulers used in cartography have a magnifying glass that can slide along the ruler. Rulers used for geometric construction and measurements include straightedges, try squares, and shaped rulers (for instance, officer’s and navigator’s protractors, stencils), as well as French curves. In industry, rulers are used to measure linear dimensions in specific units (for instance, points in printing). Rulers are also used in technology for various purposes. For instance, a shrink ruler serves to compare specified dimensions and actual dimensions (in foundries, textile production). A straightedge is used to check the linearity of generating lines or the smoothness of surfaces in manufactured articles. A tape measure is used for measuring large lengths or diameters. A ruled scale is used to change from one scale to another. A slide rule is used for mathematical computations.

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No references found			Yes, I said, my impression was that you did so, when you admitted that the ruler was not infallible but might be sometimes mistaken. The Republic by Plato View in context THE FROGS, grieved at having no established Ruler, sent ambassadors to Jupiter entreating for a King. Fables by Aesop View in context The Scarecrow was now the ruler of the Emerald City, and although he was not a Wizard the people were proud of him. The Wonderful Wizard of Oz by Baum, L. Frank View in context			Rukhliadev, Nikolai Petrovich Rukhulla Ali Ogly Akhundov Rukhulla, Sidgi Ruki Rukmini Ashtami Rukwa Rukwa, Lake Rule Rule Britannia! rule joint rule of 80-20 rule of approximation rule of detachment rule of false position Rule of Inference rule of sixty rule of V's Rule, Britannia! Rule, Karl Rule, Karl Frantsevich rule-based control system rule-based expert system Rule-of-Law State, Theory of the ruled joint Ruled Surface Ruler ruler line rules Rules and Customs of War rules based Rules of Automotive Transport RAT Rules of Courtly Love, The rules of order Rules of Railroads of the USSR ROR Rules of Socialist Society Rules of the Communist Party of the Soviet Union Rules of the Komsomol Rules of the Pioneers Rules of Transport on Inland Waterways of the USSR RTIW Rulfo, Juan ruling ruling engine Ruling Pen Rullus, Publius Servilius Rum Rum Jungle Rumaila Rumania Rumanian Rumanian Academy Rumanian Communist Party			ruled ruled ruled ruled ruled ruled joint ruled of the road ruled of the road ruled of the road ruled of the road ruled out ruled out ruled out ruled out ruled surface ruled surface ruled the roost ruled the roost ruled the roost ruled the roost ruled with a rod of iron ruled with a rod of iron ruled with a rod of iron ruled with a rod of iron ruled with a rod of iron Ruleless Ruleless Ruleless Ruleless RuleML Ruler Ruler line Ruler line Ruler of Caria Artemisia Ruler of Caria Artemisia Ruler of Caria Artemisia Ruler of the Nation Ruler of the World Ruler puppet Ruler Zig-Zag-Zig Allah Rulering Rulering Rulering Rulers Rulers Rulers Rulers Alexander Rulers Alexander Rulers Ferdinand Rulers Ferdinand Rulers Frederick Rulers Frederick Rulers of the Akan state of Asante Rulers of the Deep Rulers of the Ring Rulers of Valhalla rulership rulership rulership rulerships rulerships

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Ruler