A second polariser located in the eyepiece is then rotated and the angle of rotation/extinction measured on the integral scale.
A simple, cost-effective polarimeter suitable for student use.
A monochromatic light shines through a polariser at the base of the polarimeter and through a sample tube containing the solution for testing.
Requires a standard DC power supply to power the light source.

Physics School Lab Equipment Suppliers in India 

Ltekonline are the manufacturers of Polarimeter Light and Optical Lab used to demonstrate engineering principles in Engineering Colleges, Engineering Schools and Physics Lab Experiments for Engineering Teaching Lab in Universities