Review on LDR 020 9645 4 Inch Pressure: Improved SEO-Friendly Product Name by Jerardo Phi

The pressure gauge is very easy to use. Just connect it to the hose fitting closest to the pipe and turn the water on to full pressure and you will get a water pressure gauge. It also has an adjustable red limit arrow that shows where the maximum pressure has gone. The red arrow on the indicator wobbles a bit, it's too loose. It may fluctuate slightly due to inaccurate readings, but I still think it's close enough for normal readings. Maybe I'll take a closer look later to see if you can tighten the red needle tension or something. $10 again and free two day shipping, can't expect too much. Finally, it is recommended to drain some water from the plumbing port before installation to remove any dirt or debris that may be present so that it does not get into the gauge port. The most important value when connecting to a hot water drain. A cheap price for the certainty that the water pressure is finally there. Made in China.