| Date | 1854 |
| Author | Ridell |
| Contribution | Introduced a binocular microscope. |
| Reference | Bradbury |
| Notes | J. A. Ridell. He used prisms to split and deflect the light beam coming from the objective. See 1860, 1865, 1880. |
| Category | Microscopy |
| Pathogen Class | General |
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