Distance Between Two
    Points
 Pacing
 Chaining
 Temperature
 Standardisation
 Catenary
 Slope
 Tension
 Tacheometry
 Stadia System
 Measurement of
    Tacheometric Constants
 Refraction and Curvature
 Theodolite
    Tachaeometry
 Field Tachaeometry
 Electronic Tachaeometry

Electronic Tacheometry

The stadia procedure is used less and less often these days, more commonly geomatic engineers use a combination theodolite-EDM known in jargon as a total station. Often these instruments are connected to a field computer which stores readings and facilitates the processing of the data electronically.

This instrumentation has facilitated the development of this method of detail and contour surveying into a very slick operation. It is now possible to produce plans of large areas that previously would have taken weeks, in a matter of days.

The maths behind the operation is very simple, it is in effect the same as the stadia formulae with the term for the distance replaced by the measured slope distance.

Visit the Equipment Database for more information regarding Total Stations

S = D cos (q)

RL = RL_A + HI + D sin (q) - HT

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