Characteristics
Special equipment for measuring refraction deflection and astigmatism axis
It is beautifully constructed , give an intensive illumination, and is covenient to operate.
The well postioned glower can be rotated 360°upward and downward, The brightness can be adjusted.

Specifications
Working distance:1m
Adjustalle range of streak:3mm-20mm
Streak Rotation: 360°
Illumination source: 3V/2.1W halogen bulb
Power: AC 220V/50Hz 110V/60Hz