Let me do a bit of resizing based off of the screen grabs you gave, then a test print to test my proportions, I can give you it in form of an stl or other cad formats.That would be a good idea, just to see if the top end (which is visible on the handover) matches up, have you got a dwg or rhino file you could share ?. The top end is what made me think it was a leica flash gun handle. it seemed to have the same changes in diameter, and looked about the same size. My first thought was one of the things seen in Hans left breast pockets on his jacket, but looking at the screen shots I think they are too small.
Hah, this is great because my original scaling of it was based off of your comment about it being grapefruit sized.I'm sorry, I thought you were talking about the bombs, not the detonator.
View attachment 583250View attachment 583251 it looks like the pockets on the jacket definitely contain the detonators, this should give an excellent scale for them.