Case for Crius GPS module

I designed this case for a Crius GPS NEO-6 module (v3.1) as I couldn't find any published designs that fitted.
This case is for a module pcb of approx 40.5 x 40.5 x 1.0 mm.
There are corner pillars in the base for attaching the module if not using the lid.
If using the lid, the pcb is held in place between the pillars and the skirt of the lid.