TM 5-6675-312-14
(6) Inspect circular compass assembly eyepiece assembly for scratches, cracks, and defective operation.
(7) Inspect compass case and metal circle for scratches, cracks and corrosion.
12-8. OPERATING PROCEDURES The following paragraphs contain the preparation for operation instructions and
the normal autocollimation eyepiece, circular compass assembly, and telescope level operating procedures.
a. Preparation for Operation. Preparation for operation consists of centering the theodolite and tribrach assembly
(on the tripod) over the station point and leveling the theodolite. The theodolite and tribrach assembly can be
centered using either the plumbbob assembly or the optical plummet.
(1) Centering with the Plumbbob. To center the theodolite and tribrach assembly over the station point using
the plumbbob assembly, refer to figure 2-19.
2-29
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