The Capsuhelic gauge is one of the most advanced devices of its kind, being able to produce accurate and fast indication of variables such as differential pressure. In addition to this, users can also use the gauge as a readout device for applications that require measuring of flowing fluids, as well as liquid levels in storage tanks and generally applications involving vacuum, pressure or differential pressure. The device comes with a simple movement, which allows full scale readings. In addition, the pressure being measured is an integral part of the gauge, while the system pressures permitted are up to 500 psig. Finally, there are no requirements in terms of the filling liquid, while zero and range adjustments can be made from outside the gauge.