between the two plates holds them apart and retracts the
fingers into the tube.
With the bottom plate grasped between the fingers
and enough thumb pressure applied to the top plate to
compress the spring, the tool fingers extend from the
tube in a grasping position. When the thumb pressure is
released, the tool fingers retract into the tube as far as
the object they hold will allow. Thus, enough pressure
is applied on the object to hold it securely. Some
mechanical fingers have a flexible end on the tube to
permit their use in close quarters or around obstructions
The fingers are made of thin sheet metal or
spring wire and can be easily damaged by
What are mechanical fingers used for?
LEARNING OBJECTIVES: Identify the
type of flashlight that belongs in every toolbox.
Each toolbox should have a standard Navy
vaporproof two-cell flashlight. The flashlight is used
constantly during all phases of maintenance. Installed
in both ends of the flashlight are rubber seals, which
keep out all vapors. The flashlight should be inspected
periodically for these seals, the spare bulb, and colored
filters, which are contained in the cap.
Do not throw away the filters; they will be
necessary during night operations.
Identify the type of flashlight that belongs in
LEARNING OBJECTIVES: Describe the
use of inspection mirrors.
Several types of inspection mirrors are available for
use in maintenance. The mirror is issued in a variety of
sizes and may be round or rectangular. The mirror is
connected to the end of a rod and may be fixed or
adjustable (fig. 1-76).
The inspection mirror aids in making detailed
inspections where the human eye cannot directly see
the inspection area. By angling the mirror, and with the
aid of a flashlight, it is possible to inspect most required
areas. One model of inspection mirror features a
built-in light to aid in viewing those dark places where
use of a flashlight is not convenient.
Figure 1-76.Adjustable inspection mirror.
Figure 1-75.Mechanical fingers.