| Year | 1955 |
| Date | 10-Nov |
| Volume | 113 |
| Issue | 2,842 |
| Page | 706 |
| Category | Expert's Workshop |
| Part | |
| Title | Choosing a drilling machine |
| Author | Duplex |
| Notes | Testing for accuracy, larger drilling machines, a Champion, the M.E. drill, building the drilling machine, the Pacera 5/8" drill, the Cowell 1/2" motorised machine, using machined castings, see 113 2843 762 |