| Year | 1955 |
| Date | 17-Mar |
| Volume | 112 |
| Issue | 2,808 |
| Page | 290 |
| Category | Workshop |
| Part | |
| Title | From Scratch. A Sensitive Drill |
| Author | B.Terry Aspin |
| Notes | Twins! Patterns for the headstock assembly, general view of headstock assembly, suggested modification for direct motor drive, casting the headstock, headstock pattern "exploded", double gating to avoid a misrun |