I already explored getting a modern sewing machine second hand in this question. Now I would like to consider a treadle as well. I quite enjoy traditional tools where muscle power is used over electricity. It give me a more accomplished feeling at times.
I see lots of treadle machines online at second hand sites. Likes most things the descriptions are vague and the prices vary.
What do I need to do, test and or feel for when looking at these machines? I'm sure there should be a general list of things to be aware of.