Hi and many thanks for your support,
As I found only one profil picture of this ISVA with Sopwith type floats, even the same on the datafiles book, my work is not closed to reality.
So I used some knowledge in carpentry to find the real size of the 6 strong legs beetween fuselage and floats.
this done, I cut thin brass tube and insert for tenon inside. A little bit disappointed, the result is far away from the picture, I' m too high, but everything fit perfectly
So I can' t resist to show you proudly result of monday' s progress:
Next step soon, I have to make it at the right size first!