| Year | 1938 |
| Date | 18-Aug |
| Volume | 79 |
| Issue | 1,945 |
| Page | 151 |
| Category | Tool-Room Topics |
| Part | |
| Title | Magnetic Chucks for the Surface-Grinder |
| Author | R.Hutcheson |
| Notes | Of the electromagnetic type, lines of force, "Eclipse Minor", the "Magna-Sine" magnetic sine table |