The readout is also continuous so angles can be checked at any time. The electronic transit provides a digital read-out of those angles instead of a scale it is both more accurate and less prone to errors arising from interpolating between marks on the scale or from mis-recording. After rotating the telescope to aim at a target, one may read the angle of rotation and the angle of inclination from a scale. With the aid of trigonometry, the angles and distances may be used to calculate the actual positions (x, y, and z or northing, easting and elevation) of surveyed points in absolute terms.Ī standard transit is basically a telescope with cross-hairs for sighting a target the telescope is attached to scales for measuring the angle of rotation of the telescope (normally relative to north as 0 degrees) and the angle of inclination of the telescope (relative to the horizontal as 0 degrees). With this device, as with a transit and tape, one may determine angles and distances from the instrument to points to be surveyed. 5) is a combination electronic transit and electronic distance measuring device (EDM). Eiteljorg, IIįor those who may wish a more detailed explanation of the use of the total station, the following description may be helpful.Ī total station (Fig.
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