rotary switch
If it's not to late for your panel I'd consider the Grand Rapids EIS in lieu of Vans gauges. If you total all the gauges, switch , probes transducers etc. you'll probably find as I did that it is not much cheaper if not more expensive to go with Vans stuff. The GR EIS works fabulously and is very easy to install. I love mine.
Jon Thocker N973JT RV6A, N952JT RV4, N831JT RV4