Section VI. FINAL INSPECTION PROCEDURES

ARMY

TM 9-6650-235-13&P

MARINE CORPS

TM-08552A-13&P

Section VI.

FINAL INSPECTION PROCEDURES

a. Assemble the adapter tube assembly (1),

5-40.

GENERAL.

objective tube assembly (2), borescope

extension tubes (3), and illuminating head

The following inspection shall constitute the criteria for

assembly (4).

resolution. If the direct support instrument repair shop is

unable to repair the M3 Borescope to the extent that it

b. Position a steel scale (5) approximately 9-10

will meet the standard listed below, it must be forwarded

inches below and within the field of view of the

to depot for repair.

illuminating head assembly.

5-41.

RESOLUTION.

c. Turn the electric light control knob (6) to

maximum light.

NOTE

Borescope extension tubes I, II, and III must be

d. Focus the eyepiece assembly (7) in order to

attached to the objective tube assembly during

resolve 0.032 of the steel scale. See appendix G

resolution.

for converting decimal measurements into

fractions.

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