This Volt Meter Holder is a simple rescale of only the bezel ring of the Attitude Indicator. This shape could be used with anything to mount it on a flat surface with 4 screws. I may find a glass cover as a bezel or pour a clear epoxy to seal it in. The inside of cars or airplanes can get very HOT, so use the proper filament, so it will not melt. X and Y scales must be changed the same, but Z can be adjusted to suit.