A measuring system that embodies a method and a calibration frame for use in measuring pupillary distances and segment heights is provided. The method includes an individual choosing a desired frame and then receiving a calibrated frame that substantially matches the shape and size of the desired frame. The calibrated frame also provides known measurements over its vertical plane between selected points. The method includes a photographed image of the calibrated frame worn by the individual so that using the known measurements of the calibrated frame to compare to the corresponding distance measured off the photographed image, the pupillary distances and segment heights can be determined for providing prescription lens for the desired frame, including multifocal (progressive) eyeglasses and bi-focal eyeglasses. Thereby the measuring of pupillary distances and segment heights takes into account relevant physiognomy and the desired frame of the measured individual, and so facilitating online purchases of prescription frames.
