digital vernier caliper!

digital vernier caliper

Comprehensive Analysis

1) "Digital" -- As to digital vernier caliper dig·i·tal Pronunciation: 'di-j&-t&l Function: adjective Etymology: Latin digitalis 1 : of or relating to the fingers or toes <digital dexterity> 2 : done with a finger <a digital rectal examination> 3 : of, relating to, or using calculation by numerical methods or by discrete units 4 : of, relating to, or being data in the form of especially binary digits <digital images> <a digital readout>; especially : of, relating to, or employing digital communications signals <a digital broadcast> -- compare ANALOG 2 5 : providing a readout in numerical digits <a digital voltmeter> 6 : relating to an audio recording method in which sound waves are represented digitally (as on magnetic tape) so that in the recording wow and flutter are eliminated and background noise is reduced 7 : ELECTRONIC <digital devices>; also : characterized by electronic and especially computerized technology <the digital age> - dig·i·tal·ly /-t&l-E/ adverb Pronunciation Symbols A digital system is one that uses discrete values (often electrical voltages), especially those representable as binary numbers, or non-numeric symbols such as letters or icons, for input, processing, transmission, storage, or display, rather than a continuous spectrum of values (ie, as in an analog system). The distinction of "digital" versus "analog" can refer to method of input, data storage and transfer, or the internal working of a device. The word comes from the same source as the word digit and digitus: the Latin word for finger (counting on the fingers) as these are used for discrete counting. The word digital is most commonly used in computing and electronics, especially where real-world information is converted to binary numeric form as in digital audio and digital photography. Such data-carrying signals carry one of two electronic or optical pulses, logic 1 (pulse present) or 0 (pulse absent). The term is often meant by the prefix "e-", as in e-mail and ebook, even though not all electronic systems are digital. 1 Digital noise 2 Symbol to digital conversion 3 Historical digital systems 4 See also When data are transmitted, or indeed handled at all, a certain amount of noise enters into the signal. This can have several causes: data transmitted by radio may be received inaccurately, suffer interference from other radio sources, or pick up background radio noise from the rest of the universe. Microphones pick up everything — signal as well as background noise — without discriminating between signal and noise, so when audio is encoded digitally, it already includes noise. Electric pulses being sent via wires are attenuated by the resistance of the wire, and changed by its capacitance or inductance. Temperature variations can increase or reduce these effects. While digital transmissions are also degraded, slight variations do not matter since they are ignored when the signal is received. With a..." 2) "Vernier" -- As to digital vernier caliper 1ver·ni·er Pronunciation: 'v&r-nE-&r Function: noun Etymology: Pierre Vernier 1 : a short scale made to slide along the divisions of a graduated instrument for indicating parts of divisions 2 a : a small auxiliary device used with a main device to obtain fine adjustment b : any of two or more small supplementary rocket engines or gas nozzles on a missile or a rocket vehicle for making fine adjustments in the speed or course or controlling the attitude -- called also vernier engine Pronunciation Symbols "Nonius" redirects here. For the Roman grammarian, see Nonius Marcellus "Vernier" redirects here. For the village, see Vernier, Switzerland A set of vernier calipers. A vernier scale lets one read more precisely from an evenly divided straight or circular measurement scale. It is fitted with a sliding secondary scale that is used to indicate where the measurement lies when it is in-between two of the marks on the main scale. It was invented in its modern form in 1631 by the French mathematician Pierre Vernier (1580–1637). In some languages, this device is called a nonius, which is the Latin name of the Portuguese astronomer and mathematician Pedro Nunes (1492–1578) who invented the principle. Another theory is that this name is from the Latin "nona" meaning "9" and therefore "nonius" means a "ninth" of the main scale. Verniers are common on sextants used in navigation, scientific instruments and machinists' measuring tools (all sorts, but especially calipers and micrometers) and on theodolites used in surveying. When a measurement is taken by mechanical means using one of the above mentioned instruments, the measure is read off a finely marked data scale (the "fixed" scale, in the diagram). The measure taken will usually be between two of the smallest gradations on this scale. The indicating scale ("vernier" in the diagram) is used to provide an even finer additional level of precision without resorting to estimation. An enlarged view of the above calipers shows they have a resolution or precision of 0.02 mm. The reading is 3.58 mm. The 3 mm is read off from the upper (fixed) data scale. The 0.58 mm is obtained from the lower (sliding) indicating scale at the point of closest alignment between the two scales. The superimposed red markings show where the readings are taken. Note In this example it is not clear whether the right value is 0.58mm or 0.60mm 1 Construction 2 Use 3) "Caliper" -- As to digital vernier caliper 1cal·i·per Pronunciation: 'ka-l&-p&r Function: noun Etymology: alteration of caliber 1 a : any of various measuring instruments having two usually adjustable arms, legs, or jaws used especially to measure diameter or thickness -- usually used in plural <a pair of calipers> b : a device for pressing a frictional material (as a brake pad) against the sides of a rotating wheel or disc 2 : thickness especially of paper, cardboard, or a tree [caliper illustration] Pronunciation Symbols For the brake caliper, see disc brake Digital caliper A calliper (American spelling caliper) is a device used to measure the distance between two symmetrically opposing sides. A caliper can be as simple as a compass with inward or outward-facing points. The tips of the caliper are adjusted to fit across the points to be measured, the caliper is then removed and the distance read by measuring between the tips with a measuring tool, such as a ruler. They are used in the metalworking field of mechanical engineering, and in woodworking and woodturning. 1 Types 1.1 Inside caliper 1.2 Outside caliper 1.3 Divider caliper 1.4 Oddleg caliper 1.5 Vernier calipers 1.6 Dial caliper 1.7 Digital caliper 2 Use 3 See also 4 External links Two inside calipers The inside calipers on the right are used to measure the internal size of an object. The upper caliper in the image (at the right) requires manual adjustment prior to fitting, fine setting of this caliper type is performed by tapping the caliper legs lightly on a handy surface until they will almost pass over the object. A light push against the resistance of the central pivot screw then spreads the legs to the correct dimension and provides the required, consistent feel that ensures a repeatable measurement. The lower caliper in the image has an adjusting screw that permits it to be carefully adjusted without removal of the tool from the workpiece. Three outside calipers. Outside calipers are used to measure the external size of an object. The same observations and technique apply to this type of caliper, as ..." 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