Yet Another 127 Mak Visual Back Thread

[russ.will]

Can somebody confirm what the thread on the  back of my Skymax 127 is? I've searched around and nothing mentions this sort of size at all:

 

Cheers,

Russ

Edited 2 hours ago by russ.will
Sort of solved my own problem!

[russ.will]

Hold the phone! I just realised that the visual back had been screwed on so tight by the previous owner, a part I thought was part of the VB should actually be part of the scope, so to speak:

So, I presume this is all I need?

Russ