WASasquatch made me think ...
The last instrument is indeed intended for installation, so attach the protruding tubes and the holder to.
But the last comment has made me think, because why should not be able to float alone.
I will think about it.
When such measuring devices and displays are installed in a vehicle, they are no longer perceived as if they can be viewed individually.
At the moment I am working on new materials, derived from Hannes and Clusters of cracks.
"Car paint - brass oxidized"