Topcon GTS-821A Manuel D’Utilisation
14-1
14 DETACH/ATTACH OF TRIBRACH
14
DETACH/ATTACH OF TRIBRACH
The instrument is easily detached or attached to the tribrach.
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Detachment
1) Loosen the tribrach fixing screw.
2) Loosen the tribrach fixing lever by turning counterclockwise.
3) Lift the instrument straight upwards and off.
2) Loosen the tribrach fixing lever by turning counterclockwise.
3) Lift the instrument straight upwards and off.
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Attachment
1) Coincide the white alignment piece on the lower part of the instrument with the tribrach alignment
groove.
2) Tighten the tribrach fixing lever firmly by turning clockwise.
3) Tighten the tribrach fixing screw.
3) Tighten the tribrach fixing screw.
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Locking the Tribrach Fixing lever
The tribrach fixing lever can be locked from being moved accidentally. This is useful if the upper
instrument section is not being detached very often. Simply tighten the securing screw on the fixing
lever with the accessory screw driver.
instrument section is not being detached very often. Simply tighten the securing screw on the fixing
lever with the accessory screw driver.
Alignment piece
Securing screw
Tribrach fixing lever
Tribrach alignment groove
Tribrach fixing screw
Tribrach alignment groove