Technical Data
Measure PD height and PD distance. Method : wear glasses and adjust the left and right knobs to obtain the pupil height . this is also an indispensable tool for progressive multifocal spectacle fitting .
Technical Data
Measure PD height and PD distance. Method : wear glasses and adjust the left and right knobs to obtain the pupil height . this is also an indispensable tool for progressive multifocal spectacle fitting .