| Date | 1839 |
| Author | Ross, A. |
| Contribution | Introduced the "Lister-limb" construction of microscopes. |
| Reference | Bradbury |
| Notes | The microscope tube, the stage, and the sub-stage fittings were all mounted on a single curved vertical support. Bradbury notes the influence of this design on later microscopes. See 1843. |
| Category | Microscopy |
| Pathogen Class | General |
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