Locomotive Notes

Here are the notes I took about the proportions of the 3 locomotives I draw last week.
What's missing here are the width indications.

I plan to practice drawing these 3 locs from memory in the upcoming days as warmup. Here is an example.

I did this page with a fountain pen, a Lamy Safari instead of the usual  Stabilo. 

Very nice pen with very equal line but unfortunately, it's difficult to vary the line width. Will try to use it this week.