PIC GAUGES, 0 to 60 psi ( 0 to 4 bar ), 2 in Dial, Industrial Pressure Gauge - 20TV02|201L-208D - Grainger
Hot Professional Pool SPA Filter Water Pressure Gauge Mini 0-60 Psi 0-4 Bar Side Mount 1/4 Inch Pipe Thread NPT - China Manometers, Water Meters | Made-in-China.com
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Pressure Gauge , 0-60 PSI/0-4 BAR Dual Scale , 2" Dial Display , 1/4" NPT Male Bottom Mount ,with Brass Internals Electr | Walmart Canada