Refractive error can be set to any value in steps of 0.5 dpt from – 7 to + 6 dpt.
Scale 0° to 180° for cyl. determination.
Diameter of pupil variable between 2, 3, 4, 5, 6, 8 mm.
Aspheric optical glass lens.
Focal length F = 32 mm
This is a Heine Product
