Rotating Circular mirror is ideal as single standing as well for group exhibition room to communicate with any other artworks. Any meaning that mirror reflects from the environment transforms by its elusive rotation. 
Up to 300 cm diameter of the mirror, electric motor up to 100 kg is ideal. (200 cm diameter of 6 mm thick mirror is 47 kg) If considering bigger measurements according to exhibition space, the stronger motor is needed. The edge of the mirror must be polished (Attached picture)