TM 5-6675-312-14
c. Autocollimation Eyepiece Operating Procedure.
(1)
Install theodolite and tribrach assembly on tripod (fig. 2-10).
(2)
Install the battery box assembly (fig. 3-1).
(3)
Install the autocollimation eyepiece (fig. 3-4).
(4)
Center and level the theodolite (para. 2-8a).
(5)
Take the vertical and horizontal scale readings for the line of sight.
(6)
Rotate the vertical and horizontal drive screws (fig. 2-1) until the telescope cross hairs and their reflected
image are in exact coincidence (autocollimation) and read the vertical and horizontal circle reading scales
again. The difference between the two sets of vertical and horizontal reading scales reading gives the
angular deviations of the mirror, in V and Hz, from the plane perpendicular to the line of sight.
d. Circular Compass Assembly Operating Procedure.
(1) Install theodolite and tribrach assembly on tripod (fig. 2-10).
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