TM 5-6675-306-14
Section IV. OPERATION UNDER USUAL CONDITIONS
2-8. General
c. Plate Level. Refer to figure 2-15 and adjust the
plate level.
a. The instructions in this section are published for
d. Collimation Slow-Motion Screw. Refer to figure
the information and guidance of personnel responsible
for operation of the theodolite.
e. Vertical Slow-Motion Screw. Refer to figure 2-
16 and adjust the vertical slow-motion screw.
b. The operator must know how to PERFORM
f. Horizontal Slow-Motion Screw. Refer to figure
every operation of which the theodolite is capable This
section gives instructions on handling and preparation
g. horizontal Circle Drive Knob. Refer to figure 2-
for operation of the theodolite basic motions,
17 and adjust the horizontal circle drive knob.
adjustments, and on coordinating the basic motions to
h. Footscrews. Refer to figure 2-18 and adjust the
perform the specific tasks for which the equipment is
footscrews.
designed. Since nearly every job presents a different
i. Horizontal Collimation Error Adjustment Refer
problem, the operator may have to vary given
to figure 2-19 and adjust the theodolite horizontal
procedures to fit the individual job.
2-9. Preparation for Operation
collimation error.
j. Vertical Collimation Error Adjustment. Refer to
a. General.
This
paragraph describes all
preventive maintenance checks and services and all
error.
instrument adjustments necessary to prepare the
k. Circular Level. Refer to figure 2-21 and adjust
theodolite for operation. Instrument adjustments bring
the circular level.
the theodolite into proper operating condition with
l. Optic Plummet. Refer to figure 2-22 and adjust
respect to the interrelationship of its parts and are not
the optical plummet.
normally made in the field.
b. Preventive Maintenance Checks and Services.
Perform the daily preventive maintenance checks and
services (para 3-5).
2-25
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