Alignment Telescope

used to monitor deformation processes

The Alignment Telescope is used to monitor the deformation behavior of water dams and similar large structures.

  • Article number: 108210:001.22 – Alignment Telescope

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Telescope Magnification 65 x
Objective aperture 70 mm
Shortest target distance 10 m
Field of view 31'
Tilt angle ± 30°
Circular spirit level 8'
Striding level 20"
Forced centering system “Freiberg Ball”
Horizontal fine drive 5' / revolution
Height of tilt axis 220 mm
Size 595 x 340 x 220 mm
Weight Alignment Telescope 15.0 kg
with carrying case 22.7 kg

The telescope that is used for targeting and correct alignment has been specifically developed for this application. The rigid and robust instrument is equipped with the so-called “Freiberg Ball” in order to attach it to a support plate with forced centering mechanism. The telescope has an objective aperture of 70 mm, a 65x magnification and a maximum tilt angle of ± 30°. The shortest target distance is 10 meters.

The circular spirit level has an accuracy of 8’ per 2 mm bubble run and is used for coarse leveling of the instrument. Exact leveling of the tilt axis is realized using a striding level with an accuracy of 20” per 2 mm bubble run. The achievable targeting accuracy is thus σ = 0.32".

The tribrach has two normal thumbscrews, the third one is a fixed leg. The extremely high setting accuracy thanks to the fine drive of the thumbscrews (5’ per full rotation) is worth to be mentioned.

Example of use

  • monitoring of the deformation behavior of water dams

Support for tribrach with forced centering mechanism (108320:001.24)

In order to guarantee that the alignment telescope, a theodolite or a total station as well as the fixed target plates, a triple prism or a setting cone on a tribrach are always placed in the same position in a repeatable way, the support plates of the observation points which are located outside of the structure to be monitored are equipped with a forced centering mechanism. That mechanism uses the so-called “Freiberg Ball”.

The support plates needed for a set up with forced centering are solidly installed in tubular pillars made of granite or concrete. A metal cap which is attached to the top of the pillar protects the support plate from environmental and mechanical influences.

Description

The Alignment Telescope is used to monitor the deformation behavior of water dams and similar large structures.

  • Article number: 108210:001.22 – Alignment Telescope

Downloads

Technical Data
Telescope Magnification 65 x
Objective aperture 70 mm
Shortest target distance 10 m
Field of view 31'
Tilt angle ± 30°
Circular spirit level 8'
Striding level 20"
Forced centering system “Freiberg Ball”
Horizontal fine drive 5' / revolution
Height of tilt axis 220 mm
Size 595 x 340 x 220 mm
Weight Alignment Telescope 15.0 kg
with carrying case 22.7 kg
Application

The telescope that is used for targeting and correct alignment has been specifically developed for this application. The rigid and robust instrument is equipped with the so-called “Freiberg Ball” in order to attach it to a support plate with forced centering mechanism. The telescope has an objective aperture of 70 mm, a 65x magnification and a maximum tilt angle of ± 30°. The shortest target distance is 10 meters.

The circular spirit level has an accuracy of 8’ per 2 mm bubble run and is used for coarse leveling of the instrument. Exact leveling of the tilt axis is realized using a striding level with an accuracy of 20” per 2 mm bubble run. The achievable targeting accuracy is thus σ = 0.32".

The tribrach has two normal thumbscrews, the third one is a fixed leg. The extremely high setting accuracy thanks to the fine drive of the thumbscrews (5’ per full rotation) is worth to be mentioned.

Example of use

  • monitoring of the deformation behavior of water dams
Accessories

Support for tribrach with forced centering mechanism (108320:001.24)

In order to guarantee that the alignment telescope, a theodolite or a total station as well as the fixed target plates, a triple prism or a setting cone on a tribrach are always placed in the same position in a repeatable way, the support plates of the observation points which are located outside of the structure to be monitored are equipped with a forced centering mechanism. That mechanism uses the so-called “Freiberg Ball”.

The support plates needed for a set up with forced centering are solidly installed in tubular pillars made of granite or concrete. A metal cap which is attached to the top of the pillar protects the support plate from environmental and mechanical influences.