| Year | 1915 |
| Date | 24-Jun |
| Volume | 32 |
| Issue | 739 |
| Page | 526 |
| Category | Workshop Topics |
| Part | |
| Title | Setting up for Drilling a Twist Drill Jig |
| Author | |
| Notes | The drill jig set up, the operation of drilling the boss, scale outline of improved bench & twist drill grinder |