The 52 mm Pressure Gauge White is for divers who do not care about brand, but wants the similar high standard of quality and reliability as of other brands.   This piece of SPG is made by the Italian manufacturer, that produces for most Scuba brands in the world. Direct from the factory means lower prices for you! It made form heavy duty nickel, and tough chrome plated. Tempered mineral glass that can withstand depth,and also prevents scratches as best as possible, when compared to plastic faces. This is the latest version that reads from 0-360 bars, and can be used with 300 bars cylinders.