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Set Square
A set square or triangle (American English) is an object used in engineering and technical drawing, with the aim of providing a straightedge at a right angle or other particular planar angle to a baseline. Types The simplest form of set square is a triangular piece of transparent plastic (or formerly of polished wood) with the centre removed. More commonly the set square bears the markings of a ruler and a half circle protractor. The outer edges are typically bevelled. These set squares come in two usual forms, both right triangles: one with 90-45-45 degree angles, the other with 30-60-90 degree angles. Combining the two forms by placing the hypotenuses together will also yield 15° and 75° angles. They are often purchased in packs with protractors and compasses. Less commonly found is the adjustable set square. Here, the body of the object is cut in half and rejoined with a hinge marked with angles. Adjustment to the marked angle will produce any desired angl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Millimeter
330px, Different lengths as in respect of the electromagnetic spectrum, measured by the metre and its derived scales. The microwave is between 1 metre to 1 millimetre. The millimetre (American and British English spelling differences#-re, -er, international spelling; International System of Units, SI unit symbol mm) or millimeter (American and British English spelling differences#-re, -er, American spelling) is a Units of measurement, unit of length in the International System of Units (SI), equal to one thousandth of a metre, which is the SI base unit of length. Therefore, there are one thousand millimetres in a metre, and there are ten millimetres in a centimetre. One millimetre is equal to micrometres or nanometres. Since an inch is officially defined as exactly 25.4 millimetres, a millimetre is equal to exactly (≈ 0.03937) of an inch. Definition Since 1983, the metre has been defined as "the length of the path travelled by light in vacuum during a time interval of o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Österreichischer Rundfunk
(ORF ; , ) is the national public broadcaster of Austria. Funded from a combination of television licence fee revenue and limited on-air advertising, ORF is the dominant player in the Austrian broadcast media. Austria was the last country in continental Europe after Albania to allow nationwide private television broadcasting, although commercial TV channels from neighbouring Germany have been present in Austria on Pay television, pay-TV and via Signal overspill, terrestrial overspill since the 1980s. History of broadcasting in Austria The first unregulated test transmissions in Austria began on 1 April 1923 by Radio Hekaphon, run by the radio pioneer and enthusiast (1887–1958), who applied for a radio licence in 1921; first in his telephone factory in the Brigittenau district of Vienna, later in the nearby TGM technical college. On 2 September, it aired a first broadcast address by Austrian President Michael Hainisch (1858–1940). One year later, a powerful transmitte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Springer Verlag GmbH
Springer Science+Business Media, commonly known as Springer, is a German multinational publishing company of books, e-books and peer-reviewed journals in science, humanities, technical and medical (STM) publishing. Originally founded in 1842 in Berlin, it expanded internationally in the 1960s, and through mergers in the 1990s and a sale to venture capitalists it fused with Wolters Kluwer and eventually became part of Springer Nature in 2015. Springer has major offices in Berlin, Heidelberg, Dordrecht, and New York City. History Julius Springer founded Springer-Verlag in Berlin in 1842 and his son Ferdinand Springer grew it from a small firm of 4 employees into Germany's then second-largest academic publisher with 65 staff in 1872.Chronology ". Springer Science+Business Media. In 1964, Springer expanded its business internationally, op ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Der Standard
''Der Standard'' () is an Austrian daily newspaper published in Vienna. It is considered a newspaper of record for Austria. History and profile ''Der Standard'' was founded by Oscar Bronner as a financial newspaper and published its first edition on 19 October 1988. German media company Axel Springer SE, Axel Springer acquired a stake in the paper in 1988 and sold it in 1995. Bronner remains the paper's publisher, Gerold Riedmann is editor-in-chief. ''Der Standard'' sees itself as—in a Continental European sense (socially and culturally, but not economically)—Liberalism, liberal and independent. Third parties have described the paper as having a left-liberal stance. Until 2007, the editor-in-chief of the daily was Gerfried Sperl, Alexandra Föderl-Schmid succeeded him in the post. In 2002 the paper was one of four quality daily newspapers with nationwide distribution along with ''Salzburger Nachrichten'', ''Die Presse'', and ''Wiener Zeitung''. Although ''Der Standard'' is i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Technical Drawing Tool
Drafting tools may be used for measurement and layout of drawings, or to improve the consistency and speed of creation of standard drawing elements. Tools such as pens and pencils mark the drawing medium. Other tools such as straight edges, assist the operator in drawing straight lines, or assist the operator in drawing complicated shapes repeatedly. Various scales and the protractor are used to measure the lengths of lines and angles, allowing accurate scale drawing to be carried out. The compass is used to draw arcs and circles. A drawing board was used to hold the drawing media in place; later boards included drafting machines that sped the layout of straight lines and angles. Tools such as templates and lettering guides assisted in the drawing of repetitive elements such as circles, ellipses, schematic symbols and text. Other auxiliary tools were used for special drawing purposes or for functions related to the preparation and revision of drawings. The tools used for manual ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Speed Square
A Swanson Speed Square. A Speed Square, also generically called a rafter square, rafter angle square, and triangle square, is a multi-purpose triangular carpenters' tool used for marking out. Its functions encompass many of those offered by combination squares, try squares, and framing squares. Carpenters use it to make basic measurements and mark lines on dimensional lumber, and as a saw guide for short 45 and 90 degree cuts. "Speed Square" is a registered trademark of the Swanson Tool Company. History Albert J. Swanson invented the "A" Speed Square in 1925 as a carpenter's layout tool. He later founded the Swanson Tool Company to mass produce his invention. Today, the Swanson Tool Company still manufactures and distributes the Speed Square and other carpentry tools from its headquarters in Frankfort, Illinois. Design The Speed Square is manufactured from a variety of materials such as aluminum, steel, and composites such as HDPE. They are also made in several sizes such as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cras Protractor
Jean Émile Paul Cras (; 22 May 1879 – 14 September 1932) was a 20th-century French composer and career naval officer. His musical compositions were inspired by his native Brittany, his travels to Africa, and most of all, by his sea voyages. As a naval commander he served with distinction in the Adriatic Campaign during World War I. Biography Life and naval career Cras was born and died in Brest. His father was naval medical officer. He was accepted into the navy at the age of seventeen. As a midshipman cadet on the ''Iphigénie'', he travelled in the Americas, the West Indies and Senegal. He was promoted to Lieutenant in 1908. His mathematical skills led to his proposing a number of innovations in technical practices which were adopted by the navy, including his invention of an electrical selector and a navigational plotter protractor known as (aka Cras ruler, Cras protractor, Cras plotter).Michel Fleury, "Jean Cras, an exceptional destiny", ''Polyphème'', Tim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Navigation
Navigation is a field of study that focuses on the process of monitoring and controlling the motion, movement of a craft or vehicle from one place to another.Bowditch, 2003:799. The field of navigation includes four general categories: land navigation, marine navigation, air navigation, aeronautic navigation, and space navigation. It is also the term of art used for the specialized knowledge used by navigators to perform navigation tasks. All navigational techniques involve locating the navigator's Position (geometry), position compared to known locations or patterns. Navigation, in a broader sense, can refer to any skill or study that involves the determination of position and Relative direction, direction. In this sense, navigation includes orienteering and pedestrian navigation. For marine navigation, this involves the safe movement of ships, boats and other nautical craft either on or underneath the water using positions from navigation equipment with appropriate nautical char ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gon (unit)
Gon or GON may refer to: Arts * Gon (manga), ''Gon'' (manga), a Japanese manga series * Gon (video game), ''Gon'' (video game), a 1994 video game for the Super Famicom * Gon Freecss, the main character from the manga series ''Hunter × Hunter'' * ''Gon, the Little Fox'', a Japanese children's story * ''Gon: Baku Baku Baku Baku Adventure'', a 2012 video game for the Nintendo 3DS People * Taika Gon (1906–1971), Korean runner * Masashi Nakayama (born 1967), Japanese soccer player Other uses * Gon (unit), a unit of plane angle * Gon, Burkina Faso * Gondi language * Goornong railway station, Australia * Government of Norway * Greater occipital nerve * Groton–New London Airport, in Connecticut, United States {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
