>. ? It didn't work at all on my continental engine. ++++++++++++++++++++++++++++++++++++++
I use a tach that is driven from an electronic sensor mounted at the mechanical tach drive location on the 0-200. See tach at bottom center of panel at https://dl.dropboxusercontent.com/u/32133949/IMG_8717.JPG I don't remember the brand. I'd have to do some research. It has worked for 600 hours now. Larry Flesner
