The compact model 131.11 Bourdon tube pressure gauge is constructed with a case and wetted parts from stainless steel. The modular design enables a multitude of combinations of process connections, nominal sizes and scale ranges. Due to this high variance, the instrument is suitable for use in a wide range of applications within industry. The instrument is frequently used as a failure alarm indicator on gas cylinders. With its compact design and moderate purchase costs, the pressure gauge also qualifies for machine-building and plant-construction applications.