Description
  • The filament can be rotated for 360° and move upward and downward. The 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).