| Year | 2005 |
| Date | 10-Jun |
| Volume | 194 |
| Issue | 4,249 |
| Page | 689 |
| Category | Electrical |
| Part | 8 |
| Title | Electro-Pneumatic Contactors |
| Author | Colin Beckwith |
| Notes | Moving contact terminals, auxiliary contacts, purpose of the auxiliary contacts, piston travel & auxiliary contacts, auxiliary contact segments, auxiliary contact fingers, auxiliary contact carrier |