| Year | 1939 |
| Date | 12-Oct |
| Volume | 81 |
| Issue | 2,005 |
| Page | 418 |
| Category | Workshop |
| Part | |
| Title | Expanding Mandrels |
| Author | F.Hall Bramley |
| Notes | A simple mandrel, for heavier work, another method, draw bolt arrangement for taper mandrel for heavier work, expanding mandrel, parallel mandrel for long work, mandrel for cylindrical work, for repetition work, adjustable opposed cone |