| Year | 1955 |
| Date | 29-Sep |
| Volume | 113 |
| Issue | 2,836 |
| Page | 441 |
| Category | Expert's Workshop |
| Part | |
| Title | Angular Drilling |
| Author | Duplex |
| Notes | How to make jigs. Receiving the boring bar, scribing the cross-centres, marking scribing lines, the angular table, preventing vice-slide, preparing the work, guiding the drill |