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-15-
TRIBRACH
CHECKS AND ADJUSTMENTS
Removal
•
Turn the screw on the tribrach locking
Lever
13
outward using a flat screw driver
to its stop.
• Turn the tribrach locking lever
13
180°
counterclockwise. Holding the base with
one hand, take the main body off the base.
Attachment
• Turn the tribrach locking lever
13
counterclockwise until it reaches the
position limit.
Align the positioning block on the main
body of the instrument to the notch on the
base. Install the main body onto the base.
• Turn the tribrach locking lever
13
clockwise
until it reaches the position limit so that the
‘v’ mark points downward.
• Turn the screw inward until it hits its stop.
13
Notch
Positioning
Block
13
Notch
Positioning
Block
When attempting to check and adjust the
instrument, corrections must be made in
a certain order to ensure the adjustments
are correct.
Order of adjustment:
1. Check and adjust the tubular plate
vial
17
.
2. Check and adjust the circular leveling
vial
8
.
3. Check and adjust the optical
plummet
11
(DT8-05P & DT8-05LS)
Always recheck your adjustments. We
recommend that any adjustments, other
than those above, be done by a qualified
repair technician.
Tubular plate vial
A. Place the plate vial parallel to the
leveling screws, A and B. Center the
bubble using these two level screws.
B. Turn the instrument 90° and center
the bubble using leveling screw C.
C. Return to the original position in step
A. Recheck the bubble and center as
necessary. Rotate the instrument 180°.
The bubble should still be centered in
the vial. If not, go to next step.
D. Using the adjusting pin, provided
in the case, turn the screw until the
bubble moves halfway back to its
original position.
E. Return the instrument to its original
position and repeat steps A through
C. Repeat these steps until the
bubble stays centered in all positions.