Jenoptik Jena G.m.b.h.

Peter Hentschel

Wolfgang Meyl

Hermann Goring

Horst Stegmann

Egon Seipelt

The invention relates to an arrangement for setting out terrain points and straight lines comprising a tacheometer which emits a measuring beam and detects the same after reflection at a reflector, a means for interrupting the measuring beam which is intended to mark the place of the terrain point to be set out, a target at the same place, displaceable at least at right angles to the measuring beam, and means for indicating the position of the means for interrupting the beam relative to the latter. By virtue of the arrangement the operator setting out the terrain point is able to accomplish the task without the aid of the tacheometer operator.

Arrangement for setting out points and straight lines

A system for alignment and measurement of positions includes an electronic tachymeter and a reflector system. A processing system calculates the difference, in given coordinates, between the position of the reflector system and a position of known coordinates, and this data is transmitted to the reflector system. The reflector system includes a display for displaying this difference, enabling an operator at the reflector system to adjust the position of a reflector system tube to the known position.

Measuring system for alignment and measurement with an electronic

A measuring arrangement is described for determining the terrestrial refraction in geodetic measurements, (such as trigonometric height transfers when staking out and for precision tachymetry, controlling devices for building machinery using a laser beam, and precision levelling). The measuring arrangement includes a geodetic measuring instrument, an electronic calculator and a device for measuring differences of travel times of soundwaves. After the soundwaves produced by a sound emitter have traversed representative airlayers (for instance at different heights), the time difference is measured and is used for calculating the refraction.

Measuring equipment for the determination of terrestrial refraction

A measuring system includes a tachymeter station and a reflector or evaluating station. The tachymeter station is provided with an electronic tachymeter, along with a calculating or computing device and a portable radio transmitter, for transmitting data processed by the calculator in accordance with measurement data from the tachymeter. The transmission of information is in the form of pulse width modulation. The reflector or evaluating station includes a radio receiver having a pulse demodulator, and a display unit for displaying coordinate positions in accordance with received data.

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Dresden, Germany

Peter Hentschel