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Dial 1.5” (40mm), 2” (50mm), 2.5” (63mm), 3.5” (90mm) 
white aluminum with black and red markings
Case Steel, painted black
Lens Acrylic, threaded
Socket Brass
Connection 1/8” NPT or 1/4” NPT standard
Bourdon Tube Phosphor bronze
Movement Brass (flutterless) with zero adjustment
Pointer Aluminum, black
Welding

<1,000 psi: 60% tin 40% lead,

≥1,000 psi: silver alloy

Over-pressure Limit 25% of full scale value
Working Pressure Maximum 75% of full scale value
Ambient/Process Temperature -40°F to 150°F (-40°C to 65°C)
Accuracy ±2-1-2% ANSI/ASME Grade A