The ID plate shows it as a RF 25, badged by Warco as an "Economy".
It is over 20 years old, but a very useable machine.
I think that they were available in either Imperial or Metric form.
If you cannot get a manual, PM me with an E mail address, and I will photograph my manual and E mail it over to you.
The manual is for a "Complex Machine", so some of the English may be a little odd!
Do not over tighten the clamp screws for the intermediate pulley bracket, it will crack!
As will the bracket around the quill, carrying the depth stop.
If you wish, I can tell a few of my experience s with the machine.
HTH
Howard