| Year | 1915 |
| Date | 09-Dec |
| Volume | 33 |
| Issue | 763 |
| Page | 485 |
| Category | Armament |
| Part | |
| Title | A.O.V. Munition Work |
| Author | |
| Notes | Supplementary notes on ball thrust centre and split chucks, details of suggested cast-iron split cup chuck, showing the use of the coned centre as a support for the work, a supporting centre adapted from a centreing support for drilling balls |