Dwyer 4020 Capsuhelic® Differential Pressure Gauge is a reliable and versatile instrument suitable for measuring and monitoring differential pressures in various applications. With an accuracy of ±3% at 70°F, it can handle a temperature range of 20 to 200°F. The gauge features a sturdy die-cast aluminum housing, but a forged brass option is available for water-based fluids. It can be mounted with the diaphragm in a vertical position and has a 4" dial face. Standard accessories include plugs, mounting adapters, and screws.