I am working on a 2D and VC gauge set up for the freeware Alphasim RA-5C. On the VC panel, with its painted on gauges, there is a gauge that I can not identify. I know I have seen it on other planes...but I can not remember what the gauge is called, nor do I know what it is used for. In the attached image, it is the gauge in the middle of the panel, below the Attitude Indicator.
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