| Year | 1993 |
| Date | 17-Dec |
| Volume | 171 |
| Issue | 3,959 |
| Page | 758 |
| Category | Electrical |
| Part | 9 |
| Title | Low Voltage DC Motor Drives |
| Author | Geoff Bartlett |
| Notes | Describes some other applications. Toolpost mill/drill, toolpost grinder, co-ordinate drilling machine, trolley |