Great to see you making good progress with the help of other Massey Collectors on the mamoth wrench project,
Just a bit of info for you
Wrench A:- Is one of a set of three supplied new with a M-H No 23 plough.
" B:- Cream Seperator came with my No 6.
" F:- Is the same as "A" but with a "Robinson modification" to one end.
You mentioned the Z435 being available in both mallable and steel, I have both and will measure the steel one for you.
Keep up the good work.