Tilting device

A flat surface tilting device comprising:

• a selectably positionable flat surface element assembly including:
• a flat surface element having a flat surface;
• and
• a pivot location element including a first pair of spheres arranged along a first axis which extends parallel to said flat surface, said first pair of spheres being generally centered with respect to said flat surface;
• a pivot support element formed of a second pair of spheres arranged along a second axis which extends perpendicular to said first axis, said second pair of spheres pivotably engaging said first pair of spheres;
• at least two electromagnetic displacers arranged to apply a magnetic force to said flat surface so as to pivot said flat surface element about said pivot support element;
• at least one sensor for sensing the position of said flat surface element;
• and
• feedback circuitry operative in response to at least one output of said at least one sensor for governing operation of said at least two electromagnetic displacers.