One of the most basic requirements in diving is the pressure gauge. Color coded: Blue Markers: 5,000 PSI down to 1,001. Yellow Markers: 1,000 PSI down to 501. Red Markers: Safety Reserve. 500 PSI to 0. Luminescent Face absorbs light and glows approximately 7 times faster and longer than other materials Temperature Gauge The Pressure Gauge with Hose and Protective Boot is made by Sherwood Scuba, an American dive brand specializing in Life Support, Masks, Snorkels, and Fins since 1955
