New Stainless Steel Liquid Filled Pressure Gauge WOG Water Oil Gas 0 to 300 PSI Center Back Mount 0-300 1/4" NPT Male 2.5" FACE DIAL for Compressor Hydraulic AIR Tank GLYCERIN FILLED UTILITY GAUGE, 1/4" MALE NPT BACK STUD, ::NOTE:: 1/4" MNPT MEASURES 0.505" LINEAR DIAMETER STAINLESS STEEL CASE, BRASS INTERNALS AND CONNECTION, DUAL SCALE PSI & BAR RATED FOR AIR / WATER / OIL / GAS AND OTHER MEDIA NOT CORROSIVE TO BRASS AMBIENT TEMP 30F TO 160F - PLASTIC LENS - BUILT IN SNUBBER 2-1-2% SPAN OF ACCURACY - PHOSPHOR BRONZE BOURDON TUBE