caliper

/kal"euh peuhr/, n.
1. Usually, calipers. an instrument for measuring thicknesses and internal or external diameters inaccessible to a scale, consisting usually of a pair of adjustable pivoted legs.
2. any of various calibrated instruments for measuring thicknesses or distances between surfaces, usually having a screwed or sliding adjustable piece. Cf. vernier caliper.
3. thickness or depth, as of paper or a tree.
4. Usually, calipers. the pincers of an earwig.
5. Auto. the part of a disc-brake assembly that straddles the disc and presses the brake pads against it. See illus. under disc brake.
6. a similar part used with a hand brake on a bicycle.
v.t.
7. to measure with calipers.
v.i.
8. to use calipers.
Also, calliper.
[1580-90; presumably var. of CALIBER]

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Instrument that consists of two adjustable legs or jaws for measuring the dimensions of material parts.

Spring calipers have an adjusting screw and nut; firm-joint calipers use friction at the joint to hold the legs unmoving. Outside calipers measure thicknesses and outside diameters of objects; inside calipers measure hole diameters and distances between surfaces. Hermaphrodite calipers, which have one leg bent inward and one straight leg ending in a sharp point, are used for scribing lines at a specified distance from a flat or curved surface. See also micrometer.

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▪ measurement instrument
also spelled  Calliper,  
 measuring instrument that consists of two adjustable legs or jaws for measuring the dimensions of material parts. The calipers on the right side of the illustration—> have an adjusting screw and nut and are known as spring calipers; those on the left are an illustration of firm-joint calipers, which are held in place by friction at the joint. Outside calipers measure thicknesses and outside diameters of objects; inside calipers measure hole diameters and distances between surfaces. To check the dimensions of a machined part, the calipers are first adjusted to the required dimension on a ruler or a standard plug or hole gauge; accuracy in calipering depends in large part on the sense of touch of the operator.

      A hermaphrodite caliper has one leg bent inward and one straight leg ending in a sharp point; this type of caliper is used for scribing lines at a specified distance from a flat or curved surface.

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Universalium. 2010.

Look at other dictionaries:

  • caliper — [kal′ə pər] n. [var. of CALIBER] 1. [usually pl.] an instrument consisting of a pair of movable, curved legs fastened together at one end, used to measure the thickness or diameter of something: there are inside calipers and outside calipers 2.… …   English World dictionary

  • caliper — 1620s, short for calliper compass (1580s), a device used to measure CALIBER (Cf. caliber) (q.v.). Related: Calipers …   Etymology dictionary

  • caliper — (also calliper) ► NOUN 1) (also calipers) a measuring instrument with two hinged legs and in turned or out turned points. 2) a motor vehicle or bicycle brake consisting of two or more hinged components. 3) a metal support for a person s leg.… …   English terms dictionary

  • Caliper — For other uses, see Caliper (disambiguation). A vernier caliper …   Wikipedia

  • caliper — [1] The apparatus on disc brakes which hold the disc pads and straddles the disc. When actuated the pads press against the disc to stop or slow the vehicle. Also see brake caliper floating caliper disc brake pin slider caliper disc brake swinging …   Dictionary of automotive terms

  • caliper —    the thickness of a sheet of paper or card stock. Traditionally measured in points7 (thousandths of an inch), caliper is now measured in microns (micrometers). The word caliper is sometimes used in place of the proper unit, as in .004 caliper ( …   Dictionary of units of measurement

  • caliper — kavernometras statusas T sritis Standartizacija ir metrologija apibrėžtis Gręžinio skersmens kitimo matuoklis. atitikmenys: angl. caliper; caliper logging tool; hole caliper logging tool vok. Kalibermesser, m rus. каверномер, m pranc. diamétreur …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • caliper — cal·i·per or chiefly Brit cal·li·per kal ə pər n 1) any of various measuring instruments having two usu. adjustable arms, legs, or jaws used to measure thickness, diameter, and distance between surfaces usu. used in pl. <a pair of calipers> …   Medical dictionary

  • caliper — /ˈkæləpə/ (say kaluhpuh) noun 1. (usually plural) a tool in its simplest form having two legs and resembling a compass (def. 7), used for obtaining inside and outside measurements, especially across curved surfaces. 2. → caliper rule. 3. Also,… …   Australian English dictionary

  • Caliper — см. Caliper …   Краткий толковый словарь по полиграфии

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