aichi d3a1

Good morning, everyone. I am curious as to whether anyone has any good ideas on what device this is inside the pilot's cockpit of the D3A Val? I think it's some sort of junction box, but I'm always looking for more ideas (and perhaps a surviving example if someone knows exactly what it is)...

Hello everyone, Has anyone ever come across reliable maneuvering data on the D3A1, namely the roll rate? Thanks!