Thanks John,
Your patient and clear explanations have been very useful. I have updated the labelled images which can be found below. Some of the labels are now hybrids of different nomenclature, but this should make it (relatively) clear for different readers.
Thanks also for reminding me of your eloquent review of the Union watch. Your point about the movement layout making “engineering allowances at the most fundamental levels for the sake of an aesthetic vision” perfectly applies to the gear trains in the La Tradition.
Kindest regards
Andrew