Sunnen PG bore gauges simplify precise hole measurement
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Sunnen's PG bore gauges exploit an intuitive approach to hole gauging with a mechanical design and speedometer-type scale for quick visual confirmation of ID (inside diameter). The gauges combine accuracy of ±0.0006 mm with a shop-hardened design that is compact, portable and mountable on machining stations.
Sunnen PG gauges 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 0.001 mm for 100% inspection of machining operations or fast sampling of large vendor lots. Various models are available for IDs for metric models from 2.0-109.47 mm and imperial from 0.090 to 4.310 inch.
PG Bore Gauge remove complexity from the measurement process, allowing machine operators to precisely confirm part size with an intuitive analogue scale. The gauges are not affected by temperature, moisture, air pressure, or vibration, and they need no electrical or air connections, making them immune to fluctuations in line voltage or air pressure.
A calibration ring traceable to NIST and international standards comes with the gauge and features nominal size at 68°F marked on the face. Calibration checks with the ring ensure that gauge-setting capability retains accuracy within original limits of ±0.000020 inch.
