Radius gauge for determining front surface refractive power on optical eyeglass lens, has single-piece plate including ten different radii, which are assigned to defined numerical values

摘要

The gauge has a single-piece plate including 10 different radii, which are assigned to defined numerical values. The plate is manufactured from two millimeters strong polystyrene or one millimeter strong high-grade steel. The gauge is prepared by CNC-milling or with help of a laser.