Selecting a Pressure Gauge
  Mounting & Connection
  Fluid Composition
  Case & Housing
  Front Ring & Window
  Temperature/Ambient Conditions
  Liquid Filled Option
  Shock, Vibration, Pulsation
  Chemical Diaphragm Seals/Gauge Protection
  Chemical Compatibility Table
  Pressure Conversion Chart

Front Ring & Window

The front ring can be made of acrylic, stainless steel, brass, steel, etc. The viewing window is held in place by the front ring. Some rings are a permanent crimp design, while others can be removed providing dial/pointer access for recalibration or repair. The ring which retains the window is bayonet, threaded, snap-on or with screws, depending on the application and case type. Window materials are typically clear acrylic, polycarbonate, flat glass or safety glass.