Features:
1. External reading
2. ±25D measurement range
3. Wide field of vision observation
Parameters:
Range of measurement | 0D~±25D |
Minimum scale value | 0.125D |
Cylinder axis range | 0~180º (1ºsteps) |
Prism diopter | 0~5△ 1△ step |
CT4225B (with prism compensator) 0~20△ 1△ step |
Prism base angle | 0~180º |
Eyepiece adjustment | ±5D |
Dimension of objective lens | 16~86mm |
Overall size | 22*12*43cm |
Weight | 3.9kgs |
Lighting bulb | 220V/110V, 3V, 3W |