| Year | 1979 |
| Date | 20-Jul |
| Volume | 145 |
| Issue | 3,613 |
| Page | 830 |
| Category | Workshop |
| Part | 7 |
| Title | A Versatile Dividing Head |
| Author | Geo.H.Thomas |
| Notes | Plunger & arm assembly, arm, plunger sleeve, plunger, handle or knob, worm thrust collar, acorn nut, plates, the micro attachment, body or bracket, locking pads, wormshaft |