Mid-West Instrument”s Model 124 differential-pressure gauge is designed for safe working pressures of 10,000 PSI and a proof pressure of 20,000 PSI. The gauge is available with 316/316L stainless-steel bodies, 316 SS springs and internal parts, as well as a variety of elastomers. The gauge is over-range protected in either direction up to 5,000 PSID. Available differential-pressure ranges are zero to five PSID through zero to 400 PSID. Hermetically sealed SPST or SPDT magnetically actuated reed switches are available as options, providing high and/or low alarm control. One of the leading designers and manufacturers of differential-pressure gauges in the United States. Available with two-inch, three-inch, or four-inch dials. The gauge comes with a five-year warranty.