| Year | 1940 |
| Date | 25-Apr |
| Volume | 82 |
| Issue | 2,033 |
| Page | 425 |
| Category | Workshop |
| Part | |
| Title | Gauges and Gauging |
| Author | R.Barnard Way |
| Notes | Zeiss Optimeter, electrical methods of gauging. Principles of the Zeiss Optimeter, bridge circuit arrangement of an electrical gauging device, the Taylor Hobson Electrolimit gauge and gauging machine |