| Year | 2018 |
| Date | 31-Aug |
| Volume | 221 |
| Issue | 4,594 |
| Page | 390 |
| Category | Educational |
| Part | 21 |
| Title | Lathes and More for Beginners |
| Author | Graham Sadler |
| Notes | Chats briefly about the use of micrometers before going on to make indexing gear for his tool post. Measurement, resolution, how do you read micrometers? Making the indexing gear, indexing pin, tapered socket |