Pressure Gauge 40mm 1/8 BSPT Rear Back 15,30,60.100,160,300 PSI & Bar for Air, Gas, Water, Fuel. - AliExpress
How do I convert PSI to Bar to MPa? – How to convert MPa to psi plus kpa ksi and atm
Amazon.com: uxcell Back Mount Pressure Gauge, 0-180 Psi 0-12 Bar, 0-1200 Kpa, 1-25/32" Dial Display, 1/4 NPT Male for Air Compressor Water Oil Gas : Industrial & Scientific