| Year | 1928 |
| Date | 08-Nov |
| Volume | 59 |
| Issue | 1,435 |
| Page | 436 |
| Category | Workshop |
| Part | |
| Title | Noisy Ball Bearings |
| Author | |
| Notes | A correspondent has fitted ball bearings to the flywheel shaft of his lathe, and now complains of the rumbling noise observable in the room below |