Water Pressure Gauges [2803-LFP-220]
Even in sub-zero weather, these gauges retain their accuracy, thanks to a silicone fill fluid and unique cavity construction that prevents any water in the gauge bourdon tube from freezing. Fire apparatus gauges by Span Instruments are the only ones that keep working accurately right down to -40F. Stainless split U-clamps and mounting studs included with each gauge. 2.5" Black on white, compound gauge.