Termo Tech SPG - Naked Black Face Tusa Gauges The first stage is completely

The first stage is completely sealed from the elements to prevent it from freezing up or free-flowing on you

Many technical (both backmount and sidemount) divers prefer Alcan cylinders

and shows your current depth and maximum depth

000 psi (350 bar)

An industrial-strength internal spring is rated to over 5

Termo Tech SPG - Naked Black Face Tusa Gauges The first stage is completelyEngineered for technical divers and DIR focused setups, the SPG Tech Gauge with black face provides exceptional accuracy and reliability in demanding underwater conditions. Featuring a durable tempered glass lens, double welded body and a copper beryllium Bourdon tube, this high performance pressure gauge delivers outstanding shock resistance and long term calibration stability. Its sleek black dial offers excellent readability in low light