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2. Tacheometry - Wikipedia

   en.wikipedia.org/wiki/Tacheometry

   A theodolite is used to measure the horizontal angle between indicators on the two ends of the subtense bar. The distance from the telescope to the subtense bar is the height of an isosceles triangle formed with the theodolite at the upper vertex and the subtense bar length at its base, determined by trigonometry.

3. Theodolite - Wikipedia

   en.wikipedia.org/wiki/Theodolite

   A theodolite (/ θ i ˈ ɒ d ə ˌ l aɪ t /) [1] is a precision optical instrument for measuring angles between designated visible points in the horizontal and vertical planes. The traditional use has been for land surveying , but it is also used extensively for building and infrastructure construction , and some specialized applications such ...

4. Tachymeter - Wikipedia

   en.wikipedia.org/wiki/Tachymeter

   Tachymeter (survey) or tacheometer, a type of theodolite used for rapid measurements of distance Tachymeter (watch) , a scale sometimes inscribed around the rim of an analogue watch Topics referred to by the same term

5. Total station - Wikipedia

   en.wikipedia.org/wiki/Total_station

   A total station or total station theodolite is an electronic/optical instrument used for surveying and building construction. It is an electronic transit theodolite integrated with electronic distance measurement (EDM) to measure both vertical and horizontal angles and the slope distance from the instrument to a particular point, and an on ...

6. Tachometer - Wikipedia

   en.wikipedia.org/wiki/Tachometer

   A tachometer (revolution-counter, tach, rev-counter, RPM gauge) is an instrument measuring the rotation speed of a shaft or disk, as in a motor or other machine. [1] The device usually displays the revolutions per minute (RPM) on a calibrated analogue dial, but digital displays are increasingly common.

7. List of measuring instruments - Wikipedia

   en.wikipedia.org/wiki/List_of_measuring_instruments

   Sensor, hypernym for devices that measure with little interaction, typically used in technical applications. Spectroscope is an important tool used by physicists. SWR meter check the quality of the match between the antenna and the transmission line .

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9. Ramsden surveying instruments - Wikipedia

   en.wikipedia.org/wiki/Ramsden_surveying_instruments

   The instrument was paid for by the Crown and the King immediately presented it to the Royal Society; for this reason the theodolite is designated as the Royal Society theodolite, or Ramsden RS in short. There is a complete description of this theodolite in the final report of the Anglo-French Survey (1784–1790). [4]