d. Cleaning, Inspection, and Repair.
(3) Inspect the inverter prism for chips,
scratches, cracks, and etching.
(1) Clean all metal parts with an approved
(4) Straighten minor dents and bends.
cleaning solvent and dry thoroughly.
Remove all burs.
Carefully clean the inverter prism with a
lens cloth or with lens tissue.
(5) Replace all damaged or defective parts.
(2) Inspect the plate, bracket, and housing for
burs, dents, bends, cracks, and other
the inverter prism.
damage. Inspect the bearing and axis for
f. Installation. Refer to figure 47 and install the
burs, scratches, cracks, and wear.
Section IX. MICROSCOPE, TELESCOPE, AND RETICLE MIRROR
The microscope is used to bring the horizontal,
vertical, and micrometer circle scales into proper focus.
The microscope eyepiece is knurled to assist the
operator in making this adjustment. The telescope
provides a means of .sighting and bringing into focus
the objective or target. The eyepiece is used to bring
the reticle crosslines into view. The focusing tube is
used to bring the objective into focus. The reticle
mirror, located in the telescope tube, is provided to
illuminate the reticle crosslines when the electrical
a. Removal. Refer to figure 49 and remove the
(1) Remove the microscope eyepiece (par.
Figure 49. Microscope and telescope eyepiece end,
removal and installation.
Figure 50. Microscope, disassembly and reassembly.