| Year | 1939 |
| Date | 07-Dec |
| Volume | 81 |
| Issue | 2,013 |
| Page | 625 |
| Category | Workshop |
| Part | |
| Title | Gauges and Gauging |
| Author | R.Barnard Way |
| Notes | For those on National Service. Two types of snap gauge, two types of horseshoe external gauges, a built-up external gauge, an adjustable external gauge, the Johannson adjustable internal gauge, taper gauges - plug and ring |