vernier theodolite

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• Theodolite — The*od o*lite, n. [Probably a corruption of the alidade. See {Alidade}.] An instrument used, especially in trigonometrical surveying, for the accurate measurement of horizontal angles, and also usually of vertical angles. It is variously… …   The Collaborative International Dictionary of English

• Vernier scale — A vernier scale is an additional scale which allows a distance or angle measurement to be read more precisely than directly reading a uniformly divided straight or circular measurement scale. It is a sliding secondary scale that is used to… …   Wikipedia

• vernier — /verr nee euhr/, n. 1. Also, vernier scale. a small, movable, graduated scale running parallel to the fixed graduated scale of a sextant, theodolite, barometer, etc., and used for measuring a fractional part of one of the divisions of the fixed… …   Universalium

• vernier — /ˈvɜniə/ (say verneeuh) noun Also, vernier scale. 1. a small, movable, graduated scale running parallel with the fixed graduated scale of a sextant, theodolite, barometer, or other graduated instrument, and used for measuring a fractional part of …  

• vernier — ver•ni•er [[t]ˈvɜr ni ər[/t]] n. 1) sur wam Also, ver′nier scale . a small, movable, graduated scale running parallel to the fixed graduated scale of a sextant, theodolite, etc., and used for measuring a fractional part of one of the divisions of …   From formal English to slang

• surveying — /seuhr vay ing/, n. 1. the science or scientific method of making surveys of land. 2. the occupation of one who makes land surveys. 3. the act of one who surveys: The surveying required nearly two days. [1425 75; late ME: act of examining… …   Universalium

• compass — Synonyms and related words: Gyrosin compass, Johansson block, RDF, T square, accept, accomplish, achieve, acquire, aesthetic distance, alentours, ambience, ambit, amount, annex, attain, beleaguer, beset, besiege, blockade, border line,… …   Moby Thesaurus

• gauge — Synonyms and related words: Johansson block, T square, adjust, amount, amplitude, appraise, appreciate, area, assay, assess, barometer, basis, benchmark, bigness, body, breadth, bulk, calculate, caliber, calibrate, caliper, calipers, call, canon …   Moby Thesaurus

• Dividing engine — at the Michigan Museum of Surveying A dividing engine is a device specifically employed to mark graduations on measuring instruments. History There has always been a need for accurate measuring instruments. Whether it is a linear device such as a …   Wikipedia

• Reflecting instrument — Reflecting instruments are those that use mirrors to enhance their ability to make measurements. In particular, the use of mirrors permits one to observe two objects simultaneously while measuring the angular distance between the objects. While… …   Wikipedia

• Macrometer — A macrometer is an instrument for measuring the size and distance of distant objects. Distant in this sense means a length that can not be readily measured by a calibrated length. The optical version of this instrument used two mirrors on a… …   Wikipedia