This mini pressure gauge is so small and lightweight it can be perfect for holiday dives as it fits into your suitcase without adding bulk and this light weight prevents excessive strain on the HP hose that would connect the first stage to your regulator. This Cressi gauge is cased in chromium plated brass for strength and housed in a lightweight polycarbonate and desmopan which guarantees protection from scratches and shocks. The front glass includes a pressure relief valve to allow excess pressure to escape in the event of a sudden increase in pressure inside the instrument and this includes a luminescent dial for easier reading in poor lighting which is calibrated up to 350 bar.