I ended up with this sweet Fluke PM3380B CombiScope for a great price, but it was missing some components; one of the missing parts was this screen bezel that kept the plastic contrast screen in place. I designed this in Fusion 360 using measurements from my oscilloscope and photos of the part online. One Sketch of the .f3d file contains a converted graphic from the cover of the PDF manual, but this is for visual reference only - its dimensions are not accurate!
I may add additional clips to the sides eventually so it stays in place better, but as it is, there is just enough friction fit for it to work.
RepRap Warehouse PLA
Using Green painter's tape on a heated glass bed at 50ºC to prevent warping at the corners; hot end at 195ºC
The oscilloscope used for measurements of the bezel
This is an image of the missing part found online used for reference