Pupil Distance Adjustable: Yes
Rotation of optical axis adjust: 360 degree
PD range: 50mm - 80mm; Increments: 1mm
Lens Holder Outer Diameter: 38mm
Lens Seats: 10 lens
1. Excellent performance and high measuring accuracy. Actuating cam can fix the direction of astigmatism axle. The monocular pupillary distance, the height and fore-and-aft angle of the nose bearer as well as and the height and length of the hanger loop are adjustable. The unique global knob makes the operation more comfortable and easy.
2. 5 pieces of trial glasses can simultaneously be put in the left and right optical frames respectively.