| Year | 1937 |
| Date | 17-Jun |
| Volume | 76 |
| Issue | 1,884 |
| Page | 568 |
| Category | Trade |
| Part | |
| Title | The All-Steel "Versa-Vice" (William Frost & Company) |
| Author | |
| Notes | Scraping a half bearing bush, adjusting delicate instruments, marking-off rings and similar work, drilling parallel or concentric to an axis |