Ada DIGITEO-2 А00226 [18/58] Digi teo 2 5 10 20

Ada DIGITEO-20 А00229 [18/58] Digi teo 2 5 10 20
MEASUREMENT FOUNDATION
18
DigiTeo-2/5/10/20
Check and adjustment
a. Adjust the eyepiece of the telescope properly prior
to any checking operation which involves sighting
through the telescope. Remember to focus properly,
with parallax completely eliminated.
b. Carry out the adjustment in the order listed, as
the adjustments are dependent one upon another.
Adjustments carried out in the wrong sequence may
even nullify previous adjustments
c. Conclude adjustments by tightening the adjustment
screws securely ( but do not tightening them more than
necessary, as you may strip the threads, twist off the
screw necessary, as you may strip the threads, twist off
the screw or place undue stress on the parts.)
d. The attachment screws must also be tightened suf-
ciently upon completion of adjustments.
e. Always repeat checking operations after adjustments
are made in order to verify results.
1. Check and adjust the plate level.
Check:
a. Place the plate level parallel to aline running through
the centers of two leveling screws(e.g. A, B). Use these
two screws to place the bubble in the center of the plate
level vial.
b. Next, revolve the instrument 180° or 200gon
around the vertical axis and check bubble movement
of the plate level. If the bubble has been displaced,
then proceed with the following adjustment.
Adjustment:
a. Adjust the level adjustment capstan screw with the
accessory adjusting pin and return the bubble towards
the center of the plate level vial. However, correct only
one-half of the displacement by this method.
b. Correct the remaining 1/2 amount of the bubble
displacement with the leveling screws.
c. Revolve the instrument 180°or 200gon around the vertical axis once more and
check bubble movement if the bubble is still displaced, then repeat the adjustment.
2. Check and adjust vertical cross-hair.
Check: Carefully level the instrument with the plate level. If the bubble of
the circular level is centered properly at this time, adjustment is not required.
Otherwise, proceed with the following adjustment.
Adjustment: Shift the bubble to the center of the level by adjusting three
capstan adjustment screws on the bottom surface of the circular level, with
the accessory adjusting pin.(see diagram)
adjustment screw
adjustment screws
tribrach
bubble

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