Leica T 1800
electronic theodolite Leica T 1800
record number: 93
instrument type: electronic theodolite
manufacturer: Leica
serial number: 636924
model: T 1800
weight: 7.11 kg
dimensions (l/w/h): 25/27/37 cm
year of manufacture: 1996
centering and leveling the instrument: laser plummet
circular level
electronic level

The electronic theodolite was made in 1996. The theodolite is one of the last models of stand-alone electronic theodolites of the usual precision and forms the basis for the modular tacheometer. A Leica Wild DI model distance meter is mounted on the telescope; at the Chair of Geodesy, it was used in combination with the Leica Wild DIOR 3002S distance meter. The combination allowed for easy and fast detailed measurements, for the first time without the use of reflectors. What is common today was a wonder in the 1990s. The detailed measurement was given new dimensions.

The instrument is basically a second-order theodolite, with a measurement precision of 1''. As a fact of interest, the instrument was used in 1998 to measure the shape and dimensions of cooling tower 4 at the Šoštanj Thermal Power Plant, which was something completely new at the time.

The instrument is in the same condition as it was when it was originally taken out of service.

Characteristics
horizontal circle vertical circle
diameter: protected protected
type of division: continuous division continuous division
limb implementation: glass bracket glass bracket
division: sexagesimal/sexadecimal sexagesimal/sexadecimal
unit: / /
Reading
number of reading points: 1 1
reading device: display display
number of units: / /
graduation unit: 1'' 1''
repetition: / /
Telescope
diameter of objective: 42 mm
magnification: 30 x
type: telescope with internal focusing
cross hairs/reticule: Reichenbach's crosshairs, constant 100