| Year | 1993 |
| Date | 05-Nov |
| Volume | 171 |
| Issue | 3,956 |
| Page | 544 |
| Category | Optical |
| Part | 3 |
| Title | Biological Microscope and Vertical Illuminator |
| Author | H.A.Holland |
| Notes | Further component details. Screw, fine adjustment screw, bearing & nut for fine adjustment screw, limb top cover, lever pivot, lever, spring, fine adjustment knobs and screws, assembly of fine adjustment components |