Liquid Filled Pressure Gauge
Diameter: 1-1/2", 2", 2-1/2", 3", 4"
Case: 304,316 stainless steel
Window: polycarbonate, glass 
Internal: stainless steel,brass
Connection: bottom connection, center back male connection
Range: 0~7000psi
Scale: psi, bar, Mpa, Kpa, kg/cm2, Hg single or dual scale or according to customers order.
Accuracy: 1.6%, 1%
Oil composes:glycerol,silicone
Inlet thread: 1/8", 1/2", 1/4", NPT ,BSPT, BSP