The main advantage of this precise rotation stage is that it has very compact dimensions and low-profile together with the great aperture in the middle. This rotation stage has two modifications with different apertures: M27x1 or 30 mm. 7R150V doesn't need additional adapter plate to be mounted on any surface as it has 3 M6 holes on bottom.

Short video demonstration where rotation stage is used as a part of goniometric system: