Ok here we go
Thick wire gauge 0.092in
Thin wire gauge 0.048in
All measurements are taken between the inside of the bends
Thick from right 12.5mm
Thick down 10mm
Thick horizontal stub facing toward you 3mm
Thin from right 13.5mm
Thin down 9mm
Thin horizontal stub facing toward you 1mm
Other to follow later ( I have to take it off my arm)
I think it was you who posted some pictures of suitably modified bulldog clip metalwork?!
Yes t'was I
PS
I don't think you need a thumbscrew,there were some solid counterweights made.
Middle wire gauge 0.048in
Middle from right 13.5mm
Middle down 12mm
Middle horizontal stub facing toward you 3.5mm