| A simple mounting consisting of a Nicol prism in a brass holder was found with the instrument and now serves as the polarizer. |
| Polarization can be verified by rotating either the Nicol prism or the Polaroid, which is between the Nicol prism and the lens in the photograph. |
| The light is admitted into the far end of the instrument and is polarized by passing through a Nicol prism. |
| Although its significance went unrecognised at the time, the Nicol prism is now used in all polarising microscopes today. |
| The aluminum handle used to rotate the Nicol prism assembly is clearly not original. |
| By placing a substance between two Nicol prisms and rotating one, the angle of optical rotation could be easily measured. |
