| Year | 1928 |
| Date | 26-Jul |
| Volume | 59 |
| Issue | 1,420 |
| Page | 88 |
| Category | Workshop |
| Part | 3 |
| Title | For the Apprentice's Tool Kit. Making a Key Seat Rule |
| Author | |
| Notes | General note, description of the tool, making the rule, an alternative method of producing the angle steel, preparing black angle and marking the tool |