Industrial Grade Welding Gauges can be used where fluid medium does not clog connection port or corrode copper alloy for welding, cutting and related applications. The Gauges have pressures range from 1.0 to 400 kg/ cm² for oxygen, acetylene and other gases. The Gauges have copper alloy made bourdon tube, movement, pressure element. The Gauges have bottom or back pressure connection and ns 50, 63: 1/8, 1/4" BSP / NPT, 14 mm flats threaded entry. The Gauges have white aluminium with red and black lettering dial and have back mounting type design. The Gauges are available in 50, 63 mm sizes. The Gauges have brass or lacquered steel case with pressure vent on back side above range 100 kg/ cm ² and polycarbonate snap fit window. The Industrial Grade Welding Gauges are used for welding cutting and related applications and black aluminium made pointer.