Part Number: 50215
Includes 6 gages. 5/16" to 6"
Range. Made of hardened steel.
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Telescoping gages are
used to gage large holes and to measure inside
distances. These gages are equipped with a plunger
that can be locked in the measuring position
by a knurled screw or locking nut in the end of the
handle. Maximum measuring capacity is 6 inches.
Measurements must be calipered on the gage by a
micrometer, as in the case of the small hole gages.
They are also used when measurements cannot be taken
with a standard micrometer. Telescoping gages are
particularly adaptable for roughly bored work and
odd sizes and shapes of holes.
To use the telescoping
gage loosen the knurled locking nut at the end of
the handle. Compress the plungers, place them into
the hole to be measured, release the turning handle
screw, slightly tilt the telescoping gage, and rock
it back and forth slightly, while at the same time
gradually tightening the turning handle screw.
Remove the gage from the hole. Take measurements
only once. Repeated attempts will produce an
inaccurate reading. Measure the gage setting with an