PD&PH meter NH9

PD&PH meter NH9

PD&PH meter NH9B

Main feature

Mesure PD , PH , glasses to eye distance 

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

MODEL	NH-9
Measure function	PD PH