Figure 2-14.Ships binoculars arrangement and operating
7. Rotate the variable-density control knob to
control light and glare from the target field. Full
clockwise rotation of the knob brings the polarizing
filter, aligned for maximum light transmission, into the
light paths. Gradual counterclockwise turns reduce light
transmission to the minimum.
8. To lock the binocular assembly in the desired
position, tighten the azimuth carriage and carriage
assembly elevation lock knobs. A slight amount of
friction may be introduced by leaving the elevation lock
knobs slightly loose.
When the binocular is not in use, lower the
carriage to its lowest position, secure all locks, and
install the canvas cover over the binocular assembly.
Maintenance should be performed according to
the MRC. Scheduled maintenance includes routine
inspection, cleaning, lubrication, and adjustments that
can be made without removing the binoculars from the
The optical parts sealed within the body
of binoculars may be seriously damaged by
contamination if the body seal is broken. Any
repair or adjustment requiring opening the
body should be made by the appropriate fa-
Ship binoculars should be inspected daily to make
sure they are in good working order both optically and
mechanically. This includes checking the locking
mechanisms, elevation, and rotation; external
surfaces; rubber components for deterioration; and all
controls to ensure a snug fit between their respective
shafts and preformed packing.
The objective and eyepiece lenses are to be
cleaned using appropriate cleaning material according
to the MRC. However, unnecessary cleaning should
be avoided. Wipe the metal parts of the binoculars with
fresh water and detergent to prevent accumulation of
salt and dirt.
When lubricating, remove the old lubricant and
residue. Apply new lubricant sparingly as required.
The angular elevation clamp, round boss, and lock pin
should be lubricated at each removal or replacement.
Remove the access cover to lubricate the gear