I just bought a chain sharpener and breaker and spinner from a man whose dad had this and recently passed away. I don’t know much about these, but, realize they are quality tools.
You should try it out on a worn out chain so you get used to how it works and how to set it up, perhaps give it some cleaning first.
I don't know anything about your specific device but they are usually quite similar, I guess someone designed one decades ago and different companies have made variations of that up through time.
I have great fun with mine, I'm actually considering to make a sign outside my house by the road "machine sharpening chainsaw chains" - or something.
There are other guys in the area that have signs like "fresh potatoes" or "birch firewood" so why not
5 dollars a chain that's 160 chains and I can buy me that new saw that I wanted