TM5-6675-296-14
c. Cleaning and Inspection.
(5) Replace all defective parts.
(1) Clean the autocollimation eyepiece and
d. Installation.
illumination with a soft, dry cloth.
(1) Position the autocollimation eyepiece (fig.
(2) Clean the external part of the lens with a
camel's-hair brush or lens tissue or by breathing
retaining screws.
on the lens and wiping dry the the chamois.
( 2 ) Attach the autocollimation eyepiece
(3) Inspect the lens for chips, cracks, and
illumination to the bottom of the eyepiece.
fungus etching.
(4) Inspect the lamp and the cable assembly
for defects.
Section X. MAINTENANCE OF TRIBRACH ASSEMBLY
having to level or realign the theodolite each time
it is moved.
a. General. The tribrach assembly consists of
b. Removal. (Models T2-56-C-MIL, T2-56-
the tribrach, leveling, screw, optical plummet,
T2-63MIL,
M-MIL,
T2-66-C-MIL
and
circular level, and base plate assemblies. Together
T2-67MIL).
they enable the operator to quickly and accurately
(1) Push the tribrach lock lever (fig. 4-27)
secure the theodolite to, and remove it from the
downward and to the right to disengage locking
preleveled base which remains attached to the
lever.
tripod head. By using it the operator can shift the
( 2 ) Lift the t h e o d o l i t e from the tribrach
instrument back and forth between established
assembly.
stations, as when closing a traverse, without
.
( 2 ) Lift the theodolite from the tribrach
c. Removal. (Model T2-68MIL)
assembly.
(1) Loosen the locking screw (fig. 4-28) and
rotate the tribrach lock knob counterclockwise.
Previous Page
