I thought this might help others:
I put together a hard case for the TM2 (PH) plus accessories.
The Inner Dimensions are: 7.8"x3.9"x1.5", the external dimensions are 8.6"x4.9"x1.9"
It's a plastic hard case with foam dividers and claims to be watertight/airtight.
I'm able to fit:
TM2 PH...