What counts as "small scale manufacturing?" I build sensor products and controllers in my basement and sell them direct. Is that small scale enough?

There are thousands of 2-5 person machine shops turning out thousands of small parts per day. Is that what you mean?

Fine-furniture makers, small boat builders, custom farm equipment fabricators may build 5 - 500 pieces per year, is that closer?

You're asking an open-ended question. Manufacturing has always interested me and I'd love to get involved in a conversation, but right now I don't really understand your motivation.