4pc Small Hole Gage Set
Part Number: 50216
- Set of 4 gages to measure
ranges from 0.125" to 0.500"
- Hardened, half round ends
for deepest measurement hole.
Small hole gages are similar to
They are smaller in size, adjustable, having a
rounded measuring member. A knurled screw in the end
of the handle is turned to expand the ball shaped
end in small holes and recesses. A micrometer is
used to measure the ball end. The set of four gages
is used to check the dimensions of small holes,
slots, and grooves from 1/8 to 1/2 inch in diameter.
To use a small hole gage fit the ball shaped end
into the hole or slot. Expand the ball shaped end by
turning the screw at the end of the handle while
slightly rocking the gage. You will feel when the
gage has expanded to the correct dimension. Gently
remove the gage from the hole and take a measurement
with an outside micrometer.