| Year | 1939 |
| Date | 26-Jan |
| Volume | 80 |
| Issue | 1,968 |
| Page | 96 |
| Category | Workshop |
| Part | |
| Title | Beginner's Workshop Difficulties |
| Author | |
| Notes | Faulty Lathe Centres. The remedy, reamering, lapping in, mandrel nose socket errors, variation in "standard" tapers, misalignment of centres |