Valley Industries Series 40 Dual Scale Industrial 100 PSI Back Mount 4″ SS Pressure Gauge. These gauges are designed for use with any medium not corrosive to brass or bronze. Liquid-filled gauges are recommended for reducing shock caused by pressure fluctuations or vibration

Features:
Dial Range (PSI): 0 100
Dial Range (BAR): 0 7
Casing: 4″ Diameter
Movement: Brass
Bourdon Tube: C-Shaped in copper alloy
Pointer: Black enameled aluminum
Dial: White aluminum
Window: Polycarbonate temperature compensating
Case Material: 304 Stainless steel
Mounting: Back
Connection Material: Brass
Connection Size: 1/4″ MNPT
Fill Material: Glycerin (liquid)
Wetted Parts: Copper alloy
Weight: 0.75 lbs.