MASS Make Single/Double Snap action Magnetic Eletrical Contact Gauges are available in 100mm & 150mm dial size. These gauges serve for the measurment and control of pressure by switching 'on and off electrical equipments. Thus eliminates the need of separate switches for equipments such as pumps, motors, turbines, blowers for audio/visual alarms for signalling irregularities. These Contacts may be used under almost all operating conditions, they are largely immune to vibration. The contact pin carrier of the indicator is equipped with an adiustable magnet which attracts the contact arm just prior to reaching the indicator. This prevents arcing and burning of contact pins.