Review on AUTOOL Inclinometer Speedometer Display Accessories by Black Holstead

This product could be useful for off-road use, but it is missing 3 key features for RV Towing. First, the inclinometer screen does not show an average incline over a range of say 1 to 99 seconds. I need a medium class when hauling my heavy RV up/down the Rocky Mountains. The rigid suspension of my pickup over a sloppy, flat road delivers wild instantaneous values of -10° to +10°. Secondly, this device does not have a dedicated height screen. Why doesn't such an inclinometer have such a function? I can't see my altitude going up or down on my own screen while traveling through the Rocky Mountains. On both the satellite screen and the speed screen you will find the altitude in lowercase. Third, a less important note: This unit lacks a cup holder mount, so I can remove it when not towing. You can see in my photos that I "sort of" stuffed it into the cup holder on the center console. It stays level that way, but I'd rather have it with a cup holder mount so I can rotate it as I see fit. In my photos you can see the phone mount, which is rigidly attached to the cup holder, allowing me to rotate my phone as needed; I remove it when I rent a car.