Low Pressure Capsule Gauges (Our Model-7) Low Pressure Capsule Gauges are ideal for measurement of very low pressure or vacuum, normally Air or Gas. Our top-of-the-line Pressure Gauges General Purpose Gauges Industrial Gauges Bourdon Type Diaphragm Gauges Schaffers type Diaphragm Sealed Gauges Low Pressure Capsule Gauges Contact Gauges Differential Pressure Gauges Test Gauges