+16.75D to -19.00D,with minimum reading 0.25D or 0.12D (when+0.12D auxiliary lens or optional ±0.12D lens in use) +26.75D to -29.00D (when optional ±10.00D lens is in use)
Cylinder power range
0 to –6.00D,with minimum reading 0.25D or 0.12D (when auxiliary lens is in use) 0 to –8.00D (when –2.00D auxiliary lens is in use)
Astigmatic axis scale
0 to 180° in 5° steps
Cross cylinder
±0.25D,reversal type (synchronized with astigmatic axis) ±0.50D optional
Rotary prism
0 to 20ΔD in 1ΔD step
Interpupillary adjustment
48mm to 80mm in 1mm step(right and left synchronized)
Forehead rest adjustment
6mm backward and forward
Convergence
The optical axes of the lenses are aligned at a distance of 400mm from the vertexes of the corneas (2mm each for right and left inward) Interpupillary distance enabling convergence=57mm to 80m
Corneal distance device
2mm forward and 5mm backward from standard plane;with scale
Lenses with silver rim, Not including trial frame. 266pcs of lens with 2pcs of cross cylinder
Spheres
40 pairs each of concave and convex 0.25D to 6.00D in 0.25 steps 6.50D to 10.00D in 0.50 steps 11.00D to 15.00D in 1.00 steps 16.00D to 20.00D in 2.00 steps
Cylinders
20pairs each of concave and convex 0.25D to 6.00D in 0.25 steps 4.50D to 6.00D in 0.50 steps
Prisms
12 pieces 0.5(2) 1.0 to 10.0 in 1.0 steps
Accessories
14 pieces RF GF BL PL(2) MR(2) FL CL(2)PH (2) SS PF Crosscylinder x 0.25 x0.50
PD of both eyes -> 48 ~ 80mm left or right PD -> 24 ~ 40mm Minimum graduated value -> 1mm
Dividing disc axial graduation
Left dividing disc -> 1200 ~ 00 ~ 1350 Right dividing disc -> 450 ~ 1800 ~ 600 Axial graduation increases along the lens frame axis counter clockwise, and the graduated distance is 50
Inner diameter of lens frame
F32.5mm
Number of lens which can be inserted into left or right lens frame simultaneously
4pieces
Degree of lens rotating around optical axis in the lens frame
3600
Nonparallelism between lens´ optical axis and lens frame's geometric axis
≤ 2.50
Non-concentricity between lens´ optical center and lens frame geometric center
≤ 0.5mm
Displacement of lens in relation to position of lens frame geometric center
≤ 0.3mm
Range of nose rest adjustment
Length:0 ~ 14mm; angle:0 degree ~ 30 degree
Range of left or right lens frame leg's length adjustment
98 ~ 135mm
Maximum interval between left and right lens frame legs
