Maybe an O.T. but I'm in trouble with this hitch pin

anyone know where I can find the dimensions about the hitch pin in attachment ?
Is a Leica Geosystem standard I think.
I need to draw urgently the " female seat ", and I have only this pic.
Many thanks.

2 Answer

metal part is easy,, use revolve !

and simple extrude for foam part! with fillets!