| Year | 1953 |
| Date | 09-Apr |
| Volume | 108 |
| Issue | 2,707 |
| Page | 453 |
| Category | Workshop |
| Part | |
| Title | Aids to Accuracy in Marking Out. With Special Reference to Problems Encountered in Small Work |
| Author | W.T.Barker |
| Notes | Other tools, using the centre punch, warning, inaccurate tools, machine aids to marking-off, a marking-off gadget, spotting for drilling |