Fisher 4195K gauge pressure indicating controllers show process pressure and set point on an easy-to-read process scale. The controllers compare process pressure with an operator-adjusted set point and deliver a pneumatic signal to a control element so that process pressure changes toward the set point. Controller types are available for proportional only, proportional-plus-reset, and differential gaps for on/off control. 4195K controllers are used in industries where accurate pressure control and process monitoring are required.