Description of the Front Panel:
Eyepiece linkage gear;
PD of left/right eye button;
PD needle;
Nasal Pad;
Description of Rear Panel:
Battery Chamber;
Adjusting button for PD;
The function of digital PD ruler is close to the PD that we need when we wear the glasses.
The digital PD ruler will be turned off automatically when it is set level.
Turn automatically when use it. Protect the battery using life.
Display Window :
It displays the measured numerical value of PD or VD and some other relevant information.
Nose Bearer:
The testees nose rests on the nose bearer in order to fix the PD and the position of the testees pupils.
Battery lid:
Move the lid parallel to change batteries.