Product characteristics

PD adjustable range (10 specification):52mm、54mm、56mm、58mm、60mm、62mm、64mm、66mm、68mm、70mm.
Axial calibration on each diasc:165°～0°～180°～25°axis graduation line runs counter clockwise along axis
graduaion line of lens frame,with interval of graduation line being 5°
Degree that front lens rotates aroun optic axis inside lens frame:360°
Range of left or right lens frame leg,s length adjustment:90mm～99mm ，length of specification of trial frame increase 1mm in turn