This part of ISO 603 specifies the nominal dimensions, in millimeters, of:Type 1: Straight grinding wheelType 5: Wheel recessed on one sideType 7: Wheel recessed on both sides These bonded abrasive products are intended to be used for the grinding of the external peripheral surface of a rotating workpiece. The workpiece is rotated and mechanically guided with reference to the grinding wheel by means of a control-wheel and rests on a straight-edge placed between the two wheels. This title may contain less than 24 pages of technical content.