| Year | 1994 |
| Date | 01-Apr |
| Volume | 172 |
| Issue | 3,966 |
| Page | 424 |
| Category | Optical |
| Part | 8 |
| Title | Biological Microscope and Vertical Illuminator |
| Author | H.A.Holland |
| Notes | Describes the sub-stage components, designs a microtome. Ring support, condenser ring, pivot, screw, nut, centring screws, mount, lockring & mount spring, mirror assembly, miscellaneous |