The TR 2200 Series of Rotational Indexing Ring, manufactured by WEISS GmbH, is specifically designed with a huge central opening, and has flat structures and intense level of parts. Its design permits to have an extra free working space. The device's rotating aluminium ring can be adjusted if needed.
Moreover, this product has dial ring inside built with a maximum diameter of 1 135 mm, and has dial ring outside with a diameter of 1 500 mm.