Includes 6 gages. 5/16" to 6" Range. Made of
- 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 outside micrometer.