Most economical, all-purpose pressure gauge. Friction bezel rings. Brass internals. CRN registered. 5 Year warranty. 2" Dial white aluminum with black and red markings. Steel painted black case. Polycarbonate lens. Steel, painted black ring. Brass socket. 1/8" NPT Bottom connection. Phosphor bronze bourdon tube. Brass movement. Aluminum, black pointer. Silver alloy welding. 25 percent of full scale value over-pressure Limit. Maximum 75 percent of full scale value of working pressure. Ambient/process temperature -40 degree F to 150 degree F (-40 degree C to 65 degree C). +/-3-2-3 percent ANSI/ASME Grade B accuracy. IP52 Enclosure Rating. Applications: Plumbing, heating, air conditioning, pneumatic, hydraulic, water tanks, air compressors, OEM.