Since I know some here are building Harrier pits, maybe this can come handy.
Dimensions are 46.1x97.7mm
The chamfer at top left is 1.8x24
The lower screw is 15.1 from left, 11.8 from bottom edge
The upper screw is 7.5 from right edge, ??? from top
The square hole is 23.2x23.3, 19.4 from top, 4.2 from right
The switch hole is Ø12.4, counterbored Ø19 2.8mm deep, far side. Position ???
Sorry for the missing dims, I have sold the panel and my notes were not complete...