Ranges of Measurement

0 to ±25D

Minimum

Outer Reading:0.125D

Inner Reading:0.125D graduation up 0 to ±5D

and 0.25D graduations over±5D to ±25D

Cylinder Axis Range

0-180° step 1°

Primatic Power Range

0-5 prism diopters, graduations

with prism compensation device 0~20 prism diopters, 1 graduations

Prism Base Angle

0~180°

Eyepiece Adjustment

±5D

Dimension of Objective Lens

16~86mm

Overall size

275×120×430mm

Weight

4kg

Lighting Bulb

~220V/-3V 3W or ~110V/-3V 3W