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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. 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]

  7. World's strangest: The road where cars roll uphill

    www.aol.com/news/2014-05-30-worlds-strangest-the...

    Surveyor Chris English investigated using a theodolite, a sophisticated piece of equipment used for measuring angles in horizontal and vertical planes. In this case, Chris was able to confirm that ...

  8. 21 Vintage Photos of Christmas Window Displays From the Last ...

    www.aol.com/21-vintage-photos-christmas-window...

    Take a trip down memory lane with by looking at these incredible photos of Christmas window displays from the last 100 years,

  9. 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.

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