Parameter:
 Sphere power range:+16.75d~-19.00d,with minimum
 reading 0.25D or 0.12D(when +0.12D auxiliary lens or optional
 ±0.12D lens in use)+26.75D~-29.00S(when optional ±10.00D
 lens in use)
 Cylinder power range:0~-6.00D,with minimum reading
 0.25D or 0.12D(when +0.12D auxiliary cylinder lens in use)
 0~-8.00D(when -2.00 auxiliary cylinder lens in use)
 Cylinder axis:0-180°,5°steps
 Cross cylinder:±0.25D reversal,±0.50D optional
 Rotary prism:0△~20△,1△ step
 PD adjustment:48mm~80mm,1mm step
 Forehead rest adjustment:16mm
 Convergence adjustment:the optical axes of the lenses are
 aligned at a distance of 400mmm from the vertexes of the
 cornea(2mm each for right and left inward),interpupillary
 distance enabling convergence = 57mm to 80mm
 Corneal distance device:2mm forward and 5mm backward
 from standard plane with scale
 Effective field of view:19mm
 Dimentsions(packing):580mm(L)x430mm(W)x250mm(H)
 Weight(packing):7.0kgs
 
 Discount available for bulk orders!