While the thread certainly will be useful, they don't have to be vintage. And India uses wooden rulers that you can buy new, so it's not necessarily "vintage" to use them.
My men's work stems from 4 books, one from the 1880s (I rarely use it, so the name escapes me at the moment and it's at work) and Moda Aloi - Il Taglio del sarto moderno from 1932 and 1 from Muller und Sohn, one fairly recent (the 21st Century) and one from Soviet Russia from the 40s or 50s.
You will need an L square with it at the very least in addition to the curve rulers. Tailoring is also often fairly precise, and you need to make sure all the lines are actually lined up, precisely, to achieve this. Having a cuff ruler, while not necessary, is also immensely helpful.
Generally, the Fairgate designer set will have everything you need in it and probably a little more. They're metal, sort of flimsy...but the thing is, you take care of your rulers because you use them. Chinese made ones are generally fine, but sometimes the measurements are off...fine if you don't use them for that, not so great if you do.
As to the machine, I did an internship with a tailor I got because I used vintage machines. In my interview, I was asked what I learned to sew on, what I had at home and what I could use. I learned to sew on a 201, and I got the job because that was a main machine in his tailoring portion of his business, I didn't have to learn to use it.
In my own shop, most of my tailoring is done on my 66 treadle outfitted with a tailor stitch (20 SPI), and I do use my 201 fairly often in work, especially on days I don't want to think about what I am doing since I learned on that machine and it is a quality machine, one that has long been in use in dressmaker's shop and at tailors. I have machines from the 1800s to 2016 in there. If I could find a real industrial treadle, I would get rid of my Consew in a heart beat.
Being vintage is neither here nor there...the machine that does the best work for the job is always the one in use.