Winters PFQ series stainless steel dual scale liquid filled gauge. Vibration resistant, liquid filled stainless steel case. Glycerin filled standard (dry case available). Brass internals. Crimp on stainless steel bezel. Optional back flange and restrictor screw for pulsation protection. CRN registered. 5 year warranty. Ideal for hydraulic and pneumatic installations requiring instrument orientation. Dial: 2-1/2-inches (63mm) white aluminum with black and red markings. Case: AISI 304 stainless steel. Lens: polycarbonate. Ring: AISI 304 stainless steel, crimp-on. Socket: brass. Connection: 7/16"-20 SAE, lower mount. Fill liquid: glycerin. Bourdon tube: spiral tube. Movement: brass. Pointer: aluminum, anodized black. Welding: 316 stainless steel TIG Argon arc. Over-pressure limit: 15 percent. Socket gasket: buna N for two-piece internal socket seal. Fill plug: buna N. Lens ring gasket: silicone rubber. Working pressure: maximum 75 percent of full scale value. Ambient/process temperature: dry: -40 degree F to 200 degree F (-40 degree F to 93 degree F). Glycerin filled: -4 degree F to 150 degree F (-20 degree F to 65 degree F). Accuracy: +/-1.5 percent of full scale value. Enclosure rating: IP65.