The SS Case Bourdon Pressure Gauge (SP) model is designed for measuring pressure in tough conditions, for example in chemical manufacturing plants. This gauge offers glycerin filling as an option. The glycerin fill ensures ease of readability even in applications with high vibration levels and extreme loads. Glycerin lubricates the gauge internals and also protects the gauge from wear and tear. The fully welded construction guarantees long service life and stable operation of the gauge, along with tried and tested safety.