Dwyer 4050 Capsuhelic® Differential Pressure Gauge is a versatile instrument capable of measuring pressure ranges from -20" Hg to 500 psig. It features a 4" dial face, and its accuracy varies between ±3% and ±4% depending on the model. The gauge is housed in a die-cast aluminum enclosure, with the option for a forged brass housing for water or water-based fluids. It is suitable for use with air, compatible gases, and oil or water-based liquids. The gauge includes 1/4" female NPT pressure taps, and standard accessories such as plugs and mounting adapters are provided.