Figure 3-6. Telescope level installation.

TM 5-6675-312-14

STEP 1. Center and level theodolite (para. 2-8).

STEP 2. Rotate telescope so that optical sight is on

bottom.

STEP 3. Remove four screws that will secure telescope

level to telescope assembly.

STEP 4. Secure telescope level to telescope assembly

with four screws.

STEP 5. Setup a vertical staff approximately 50 yards

(or 50 meters) from theodolite.

NOTE

"Face right" is defined as, when the

illumination mirror is on the right the viewer

can look into the telescope eyepiece (fig. 2-

1). "Face left" is defined as, when the

illumination mirror is on the left the viewer

can look into the telescope eyepiece.

STEP 6. Place theodolite in "face left".

STEP 7. Using the vertical drive screw (fig. 2-1) set the

vertical circle reading scale (V) to 90 00.0'

as indicated in reading microscope eyepiece.

STEP 8. Viewing through the telescope eyepiece (fig.

2-1) note where the horizontal cross hair cuts

the vertical staff.

STEP 9. Place the theodolite in "face right".

STEP 10. Using the vertical drive screw (fig. 2-1) set

the vertical circle reading scale (V) to 270

00.0' as indicated in the reading microscope

eyepiece.

STEP 11. Viewing through the telescope eyepiece (fig.

2-1) note where horizontal cross hair cuts the

vertical staff.

Figure 3-6. Telescope level installation.

STEP 12. Using the vertical drive screw (fig. 2-1) set

telescope eyepiece cross hair to the mean

(center) of readings noted in steps 7 and 9.

STEP 13. Using adjusting pin, adjust telescope level

until the ends of the split bubble are in

coincidence.

3-7

Index