Here’s a few photos of a custom setup with a large wall-mounted tablet. This is from before the release of the SharpTools.io dashboard and is a custom setup using the SharpTools Android app, but the main concept still applies. 
You can find some neat dashboard design examples in the following thread:
Most people use the Mobile Web App - Add to Homescreen approach which adds your dashboard to your homescreen and launches it much like a native app.
Alternatively, there are a few kiosk apps available on the App Store which can open the dashboards in an immersive, full screen fashion.