Economical, non-sparking brass case gauge. 2" (50mm) brass case. UL Listing on the 4000 psi range. "USE NO OIL" on dial. Brass socket. Threaded-on plastic lens. CRN registered. 5 year warranty. Applications: Welding tank regulators or manifolds, beverage dispensing regulators and other pressurized tanks. Used on the down stream side of a regulator and the high pressures are UL Listed for measuring cylinder gases. Dial: 2" (50mm), 2.5" (63mm) white aluminum with black and red markings. Case: brass, polished. Lens: plexiglass. Ring: brass, polished. Socket: brass. Connection: 1/4" NPT standard, bottom. Bourdon tube: phosphor bronze. Movement: brass. Pointer: aluminum, painted black. Welding: silver alloy. Over-pressure limit: 25 percent of full scale value. Working pressure: maximum 75 percent of full scale value. Ambient/process temperature: -40 degree F to 150 degree F (-40 degree C to 65 degree C). Accuracy: +/-3-2-3 percent ANSI/ASME Grade B. Enclosure rating: IP52.