when the army compact binoculars dropped, one or two components inside must have been moved/shifted/disconnected from it's correct position.
You just have the disassemble the army compact binoculars in order to know what's wrong. Check for the loosed nut or any disconnected component inside the unit.
Disassembling army compact binoculars will likely result in the damage or even
destruction of the field glasses; you should attempt this procedure only
on inexpensive binoculars or those that are already damaged, so you can
get the feel of how to do it properly. As you take apart the field
glasses, label every part, including from which scope it came (left or
right) to aid in the reassembly process. Binoculars include two scopes
(or "optics," containing the lenses or "objectives" and prisms) held
together by a mounting assembly. Disassemble one scope at a time.
- Gently turn the external guard ring (the outermost ring on the
forward-facing part of the binoculars) in a counterclockwise motion and
remove it (all rings will come free in a counterclockwise motion). If
the ring does not turn by hand, use a strap wrench (as you would to
remove an oil filter from a car).
- Unscrew the retaining ring from the front of the objective housing (the
second ring behind the guard ring) using a spanner wrench.
- Remove the objective ring (the notched ring located behind the retaining
ring within the objective cell; this manages the motion of the forward
lens) with a jeweler's straight slot screwdriver; this should free the
objective cell (which is 1 1/2 to 2 inches long, depending on the power
of the binoculars) so you can remove it as well.
- Hold the objective cell in one hand and unscrew the objective bell
housing from the front of the unit (this may also require the use of a
- Repeat this process for the other scope.
Try to fix whatsoever that was loosed inside and assemble it back.
I hope the above makes sense to you.