The product can quickly and precisely measure the astigmatism axis and is one of the necessary instruments in optometry inspection.
Features
◆ | The filament can be rotated for 360° and move upward and downward. Brightness of the streak can be adjusted. |
◆ | Quickly and precisely measure the astigmatism axis. |
◆ | The light can be converged, radiated and paralleled. |
◆ | Automatic Power Off function effectively protects the bulb. |
◆ | Two-steps adjustable brightness for bulb: S(Bright) and W(Dark). |
Specifications
Working Distance | 1 m |
Streak | 3 mm-20 mm |
Streak Rotation | 360° |
Illumination Source | 3V/2W, halogen bulb |
Input Voltage | AC 220V±10%, 50Hz±1Hz |
Power Consumption | 4.5 VA |