Parachutes de France analog altimeter replacement shell

I lost the rubber frame for this analog Parachutes de France altimeter, so I made a new 3D-printed frame. This frame looks nothing like the original.
It's a very snug fit. It has a cutout for the adjustment screw, and for the split ring that holds the glass in place. This frame will hold the glass in place if that has come loose.

For a looser fit, increase inner diameter by 0.5mm by resizing the whole thing. If it's a looser fit, it will rely on the space between the glass and altimeter bod