Looks to be a clone of a Deckel G1L. I think it is pitched as an engraving machine that can also so light milling. The pantograph allows it to make complex parts by tracing a scaled template with a stylus. This is how they made complex curves before CNC and is probably faster for certain on-off parts if you include CAD and CAM time.

That is super awesome. I can't believe I never heard of a pantograph milling machine before. Thank you for the info!

If you want to see one in action, I suggest checking out Stefan Gotteswinter's channel on Youtube https://www.youtube.com/user/syyl