| Year | 1994 |
| Date | 04-Mar |
| Volume | 172 |
| Issue | 3,964 |
| Page | 302 |
| Category | Optical |
| Part | 7 |
| Title | Biological Microscope and Vertical Illuminator |
| Author | H.A.Holland |
| Notes | Describes the revolving nosepiece assembly. Nosepiece body, revolving nosepiece, screw, nosepiece spring clip, finishing the revolving nosepiece assembly, spring clips, test run |