Fast, Precise ID Measurement
Sunnen's PG-Series bore gages take a different
approach to gaging with a mechanical design and
speedometer-type scale for quick visual confirmation
of ID by a multitasking machine operator. This
gage combines lab-precise accuracy (±0.000025
inch/0.0006 mm) with a shop-hardened design that's
compact, portable and mountable on machining
stations. These gages need no electrical or air
connections, making them immune to fluctuations in
line voltage or air pressure. The bore gages remove
complexity, skill and "feel" from the measurement
process, allowing machine operators to precisely
confirm part size with a visually intuitive analog scale.
The mechanical design of these gages is not affected by
temperature, moisture, air pressure or vibration.
PG gages can be used to examine the entire bore for
diameter, taper, barrel, bell mouth, out-of-round and
lobing. A sliding faceplate with adjustable stops permits
end-to-end examination of bores. Stops can be set to
allow examination of a particular section of the bore,
with accuracy right up to the edge of ports, lands and
ends. The speedometer-type scale provides readouts
down to 0.000050 inch (0.001 mm) for 100-percent
inspection of machining operations or fast sampling
of large vendor lots. Various models are available for
gaging IDs from 0.090 inch to 4.310 inches. Metric
models cover IDs from 2.0 to 109.47 mm. A calibration
ring traceable to NIST and international standards
comes with the gage and features nominal size at 68°F
marked on the face. Calibration checks with the ring
ensure that gage-setting capability retains accuracy
within original limits of ±0.000020 inch.