Review on Measureman 2.5-Inch Dial Pressure Gauge, Glycerin-Filled, 0-100psi/kpa, 304 Stainless Steel Case, 1/4-Inch NPT Lower Mount by Kory Shelton

I use this pressure gauge on my whole house reverse osmosis water filtration system to monitor production and detect leaks. The photo shows how it is applied after UV disinfection. Normally the pressure doesn't change much, so it only shows the static pressure. But the pressure gauge still fails every few years - if the pressure is released once a year to replace the filter, it will stick and read the pressure. I restored some of them by cleaning the inlet which was clogged with scale. All of this suggests that the real test for me will be how long it will last. So far so good at 2 months but I'm hoping for 5+ years.