The Cressi mini pressure gauge is a small, light-weight gauge that has been specifically designed to avoid excessive strain on the HP hose that connects to the first stage of the regulator. The instrument has a metal case in chromium plated brass and is therefore extremely strong. The front glass is made so that it also acts as a pressure relief valve. In the event of a sudden increase in pressure inside the instrument, the glass rises slightly, allowing the excess pressure to escape. In the upper part of the protective shell there is a loop for fastening the instrument to the jacket so that it does not hang down with the risk of catching and damaging the environment.