| Year | 1940 |
| Date | 14-Mar |
| Volume | 82 |
| Issue | 2,027 |
| Page | 259 |
| Category | Workshop |
| Part | |
| Title | Gauges and Gauging |
| Author | R.Barnard Way |
| Notes | For those on National Service. Indicating gauges, another type of multiplying lever comparator, principle of the T.T. and H. comparator, a dial gauge with train of gears, with helical spindle drive, with magnifying lever, calipering dial gauge |