Behavior of an industrial system is communicated to an operator through graphical representations of gauges having a scale and pointer that represent parameters of the system. The pointer is positioned relative to the scale to indicate the parameter value. In various embodiments, when the parameter value is within operating limits, a first range is displayed that corresponds to the operating limits. When the parameter value has gone outside of the operating limits, the displayed range is changed, in some embodiments, to a second range that goes beyond the operating limits. A local visual indicator is also displayed, in particular embodiments, when the parameter value has gone outside of the operating limits. In a number of embodiments, such a tool can help to make the operator better aware of abnormal parameters of the system for early detection and correction of problematic operating conditions.