| Year | 1931 |
| Date | 18-Jun |
| Volume | 64 |
| Issue | 1,571 |
| Page | 585 |
| Category | Workshop |
| Part | 3 |
| Title | Small Tools and their Uses. Some notes on their Practical Handling and Manipulation |
| Author | A.T.G. |
| Notes | Depth-gauges, test indicators, the centre tester, exact location of holes, parallel strips, block gauges etc., using the plug and slip method, to commence the job, setting up the first hole, locating hole B, locating hole C |