Light Sensor Holder

Solenoid with variable lengths is mounted on the square rod. Output terminals are provided at 30, 60, and 90mm lengths.

The telescope on the rotating table is mounted with bearings for smooth rotation. The diffraction grating mounted is mounted at the center of the rotating table. The telescope is easy to focus on and operate. The angle of the rotating arm has a least count of 0.1° for accurate measurement of the spectral lines.