Digital Tach case and mount

I am building a 2" X 72" belt sander/grinder and this Tachometer will show me the speed of the belt.
I added a back and pivot mount so it could be mounted in a standing or hanging, or from behind just install the module in the case orientated as you like. The Digital Tachometer has a push in type attachment so there is a thin lip inside the front edge which give it a tight fit. The back cover is a tight fit and may require a small amount of sanding to the inside edge where the back attaches.