Features:
1. Internal reading
2. ±25D measurement
3. Wide field of vision observation
Parameters:
|
Range of measurement
|
0~±25D
|
|
Minimum scale value
|
0.125D (0~±5D)
0.25D (±5D ~±25D)
|
|
Cylinder axis range
|
0~180º (1ºsteps)
|
|
Prismatic power range
|
0~5△ 1△ step
|
|
CT4226B (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
|
