Description Manuals Videos Articles Popular Accessories The Quincy Potential Free Contact Gauge is a differential pressure gauge that requires no monitoring by a person. The gauge kit has an electronic output to wire to an alarm or monitor system to notify the user of the pressure differential. Dimensional Drawing Related Parts (1) Parts Included (1) Quincy QGD-60 Rotary Air Compressor $31,349.25 - $34,858.79 1802