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Tribrachs

The ideal tribrach for your application
 
Similarly to the stability of the tripod, that of the tribrach is a significant factor in measurement accuracy. The torsional rigidity, the most important criterion of a tribrach, is constantly controlled and tested during its production. The maintenance-free foot screws of the Leica Geosystems tribrach provide movement that is always smooth and free of play, even after years of use. The precise alignment of the support area to the base plate of the instrument assures extremely accurate forced centring. The optical plummet is so robust that the need for adjustment during the entire lifetime of the tribrach is practically unnecessary. Its construction predestines the tribrach for all applications, including extreme temperatures and high dust and humidity.
 
 
 
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The ideal tribrach for your application

All original tribrachs comply with the strict specifications and quality standards of Leica Geosystems. Your choice should ideally be made according to your individual accuracy requirements.
 
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Perfect Compatibility of the Accessories
On this table you will find an overview of Leica Geosystems instruments and the accessories recommended for them.



PROFESSIONAL 5000    

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GDF321, Tribrach without Plummet
High accuracy, maintenance free tribrach. Individually tested. Suitable for all high angular accuracy requirements. Torsional stiffness <1", weight 760 grams (1.72 lb).
Order No: 777 508


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GDF322, Tribrach with Optical Plummet
High accuracy, maintenance free tribrach. Individually tested. The optical plummet is of robust construction, virtually eliminating the need for adjustment during the lifetime of the tribrach. Torsional stiffness <1", weight 850 grams (1.90 lb).
Order No: 777 509




PROFESSIONAL 3000

 

 


 

GDF311, Tribrach without Plummet
Suitable for TPS instruments with an angular accuracy of greater than 3". The foot screws have a large diameter which permits fine adjustment even when wearing work gloves. Torsional stiffness <3", weight 800 grams (1.76lb). Order No: 842061


 

GDF312, Tribrach with Optical Plummet
The tribrach and optical plummet are of robust construction and suitable for long period exposure in all environments. This makes the GDF312 ideal for GNSS and backsights and control points. Torsional stiffness <3", weight 885 grams (1.95lb). Order No: 842062




PROFESSIONAL 1000

 

 


 

GDF301, Tribach without plummet
A cost effective tribrach suitable for use in normal environments.
Suitable for all light-weight instruments of low angular accuracy. Black colour. Torsional stiffness <5", weight 800 grams (1.76lb).
Order No: 842063


 

GDF302, Tribach with optical plummet
A cost effective tribrach with optical plummet for use in normal environments. Suitable for GNSS antennas. Torsional stiffness <5", weight 885 grams (1.95lb).
Order No: 842064




ACCESSORIES FOR TRIBRACHS    

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GHM007, Height Meter
For quick and easy instrument height measurement. The specially scaled tape, accurately displays the height to the centre of the TPS telescope or prism centre. The GHT196 holder is additionally required.
Order No: 667 718


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GHT196, Holder for Height Meter
For attachment of the GHM007 height meter to any Leica Geosystems tribrach.
Order No: 722 045