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2. Tribrach (instrument) - Wikipedia

   en.wikipedia.org/wiki/Tribrach_(instrument)

   A tribrach is an attachment plate used to attach a surveying instrument, for example a theodolite, total station, GNSS antenna or target to a tripod. A tribrach allows the survey instrument to be repeatedly placed in the same position over a surveying marker point with sub- millimetre precision , by loosening and re-tightening a lock to adjust ...

3. Seiler Instrument & Mfg. Co. - Wikipedia

   en.wikipedia.org/wiki/Seiler_Instrument_&_Mfg._Co.

   Seiler Instrument & Mfg. Co. is a manufacturer specializing in optical fire control equipment as well as a major distributor of surveying software and instruments, microscopes, and Zeiss planetariums. There are several main divisions within the company which include Manufacturing, Geospatial-Survey, Medical, Seiler Design Solutions, LLC., and ...

4. List of surveying instruments - Wikipedia

   en.wikipedia.org/wiki/List_of_surveying_instruments

   Instruments used in surveying include: Alidade; Alidade table; Cosmolabe; Dioptra; Dumpy level; Engineer's chain; Geodimeter; Graphometer; Groma (surveying) Laser scanning; Level; Level staff; Measuring tape; Plane table; Pole (surveying) Prism (surveying) (corner cube retroreflector) Prismatic compass (angle measurement) Ramsden surveying ...

5. Level (optical instrument) - Wikipedia

   en.wikipedia.org/wiki/Level_(optical_instrument)

   The complete unit is normally mounted on a tripod, and the telescope can freely rotate 360° in a horizontal plane.The surveyor adjusts the instrument's level by coarse adjustment of the tripod legs and fine adjustment using three precision levelling screws on the instrument to make the rotational plane horizontal.

6. Theodolite - Wikipedia

   en.wikipedia.org/wiki/Theodolite

   A direct-readout theodolite, manufactured in the Soviet Union in 1958 and used for topographic surveying. 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.

7. Tripod (surveying) - Wikipedia

   en.wikipedia.org/wiki/Tripod_(surveying)

   This shows the head of a surveyor's tripod with the hollow mounting screw in the opening. This shows a surveyor's tripod's foot. The platform is used to push the spike into the ground.

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   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

9. Level staff - Wikipedia

   en.wikipedia.org/wiki/Level_staff

   In both parts of the pattern, the squares, lines or spaces are precisely one centimetre high. When viewed through an instrument's telescope, the observer can visually interpolate a 1 cm mark to a tenth of its height, yielding a reading with precision in mm. Usually readings are recorded with millimetre precision. On this side of the rod, the ...