| Year | 1955 |
| Date | 29-Dec |
| Volume | 113 |
| Issue | 2,849 |
| Page | 1,010 |
| Category | Expert's Workshop |
| Part | |
| Title | Machining spindle locking devices |
| Author | Duplex |
| Notes | Close tolerances, alternative methods, lathe applications, good method, one drawback, manufacturing details |