Minimum scale value

0.125D graduation up 0 to±5D
           and 0.25D graduations over±5D to±25D

Cylinder Axis Range

0~180°step 1°

prism diopter of Pattern A(power range)

0-5 prism  diopters, 1△ graduations

Prism diopter of Pattern B (with prism compensation device) (power range)

0-20△ prism diopters, 1△ graduations

Prism Base Angle

0 ~180°Minimum scale value 5°

Eyepiece Adjustment

±5D

Dimension of Objective Lens

φ16mm~φ80mm

Lighting Bulb

220V/110V   15W