Four axis casting fixture

The fixture of the invention provides a bottom portion into which a mold half is placed and, movably mounted above the bottom portion, is a top portion, having two horizontal plates adapted to slide relative to each other to control the X direction and Y direction and hold a preform or wafer. Means are provided on this top portion to control the angular relationship of the mold half and preform or wafer. Further, means are provided on the fixture, not only for the accurate setting and indication of each of the relationships, but also for holding the dimensions and relationships as a series of lenses are produced in order to produce that series with the same angles and dimensions and without readjusting the equipment.