CONTROLS AND INDICATORS

ARMY

TM 9-6650-235-13&P

MARINE CORPS

TM-08552A-13&P

2-2.

CONTROLS AND INDICATORS (CONT).

b. Support Assemblies. The 90-mm thru 8-in.

LATE MODEL

support assembly (10) is adjusted by two large knurled

nuts (11) located on each side of the rear ring (12) to

(6) Later models also have a double pole,

expand or retract the support arms (13) until the desired

double-throw toggle switch (8) to select either 115-volt or

bore diameter is achieved. In order to determine if the

24-volt operation, and the 24-V electrical power cord

proper diameter has been achieved, insert the support

adapter assembly is not required.

assembly in the bore of the weapon to be inspected.

After proper adjustment has been achieved, install the

(7) The blacklight lamp switch (9) is used to

support assembly (10) on the borescope and lock in

provide power to the illuminating head assembly. This

place with three screws (14).

switch is used by depot maintenance and also for

inspection of new cannon tubes by the manufacturer.

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