Topcon GPT-2005 Manuel D’Utilisation

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   15 DETACH/ATTACH OF TRIBRACH
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15
DETACH/ATTACH OF TRIBRACH
The instrument is easily detached or attached to the tribrach, with a tribrach locking lever loosened or 
tightened for this purpose.
Detachment 
1
Loosen the tribrach locking lever, by revolving it 180° or 200gon in the counterclockwise direction 
(which will point the triangle mark upwards).
2
Grip the carrying handle firmly with one hand while holding the tribrach with the other. Then lift the 
instrument straight upwards and off.
Attachment 
1
Hold the instrument by the carrying handle, with one hand, and carefully lower it on top of the 
tribrach while, at the same time, coinciding the alignment piece with the tribrach alignment groove 
on the instrument and tribrach respectively.
2
When fully seated, revolve the tribrach locking lever 180° or 200gon clockwise ( which will point the 
triangle mark downwards again).
3
Confirm that the upper instrument section is securely attached. 
Locking the Tribrach Locking Lever
The tribrach locking lever can be locked,  to prevent it be accidentally removed, especially if the 
upper instrument section is not being detached very often. Simply tighten the securing screw on the 
locking lever with the accessory screwdriver, found in the case.
Alignment piece
Securing screw
Tribrach locking lever
Alignment groove