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Some monarchies, however, are not hereditary, and the ruler is instead determined through an elective process; a modern example is the throne of Malaysia. [9] These systems defy the model concept of a monarchy, but are commonly considered as such because they retain certain associative characteristics. [10]
Sūmû-abum (also Su-abu) was an Amorite, and the first King of the First Dynasty of Babylon (the Amorite Dynasty).He reigned c. 1897-1883 BC ().He freed a small area of land previously ruled by the fellow Amorite city state of Kazallu which included Babylon, then a minor administrative center in southern Mesopotamia.
Rulers come in two types according to the design of their edge. A ruler with a straight edge can be used with lead pencils and felt pens, whereas when a technical pen is used the edge must be grooved to prevent the spread of the ink. An architect's scale. A scale ruler is a scaled, three-edged ruler which has six different scales marked to its ...
Similar to the Geodreieck, a number of other protractor triangle types exist for navigation purposes. Various designs are named navigation (protractor) triangle, nautical navigational triangle, nautical set square, Portland (navigational) triangle or Portland protractor triangle, Kent-type triangle, Inoue-type A/B nautical triangle or plotting triangle, course triangle, yachtsmen triangle, and ...
A combination square features a ruler (the blade) which can be slid and adjusted within a head (the stock). The head usually has one face at 90° to the ruler, and another face at 45° to the ruler. Originally designed for machinists, the tool is also commonly used in woodworking.
Fully illustrated online catalogue of world's largest collection of astrolabes; Mobile astrolabe and horologium; Medieval equal hour horary quadrant; A Beginner's Guide to Basic Construction and Use of the Astrolabe (using ruler, protractor and compasses) (PDF), archived from the original (PDF) on 17 June 2015
A 6" long sewing gauge with a plastic slider. A sewing gauge is a ruler, typically 6 inches long, used for measuring short spaces.It is typically a metal scale, marked in both inches and centimeters with a sliding pointer, similar in use to a caliper.
A variety of rulers A carpenter's rule Retractable flexible rule or tape measure A closeup of a steel ruler A ruler in combination with a letter scale. A ruler, sometimes called a rule, scale or a line gauge or metre/meter stick, is an instrument used to make length measurements, whereby a length is read from a series of markings called "rules" along an edge of the device. [1]