Pressure Gauge: 2 1/2 inch face with a dial indicator from 0 to 300 psi. Liquid filled, quarter inch pipe, bottom mount. This gauge is liquid filled to absorb vibrations and to give an easily read dial. The optimum operating pressure is 175 psi and is indicated by a red mark. Download Manual and refer to page 10, final set up.
Shoo-Fly is affordable, and saves us money. I would give them 5 out of 5 stars. Truly a well-organized, well-thought-out product that each and every horse owner could be well served by.
Melanie and JT Burnley - Wrenwood Dressage