| Year | 2021 |
| Date | 21-May |
| Volume | 226 |
| Issue | 4,665 |
| Page | 669 |
| Category | Drawing |
| Part | 2 |
| Title | An Experiment in Parametric Design |
| Author | Ian Martin |
| Notes | Takes a look at how Computer Aided Design can be taken a step further by making use of concepts familiar to software engineers. Beam engine design example, interfaces, the CrankBlockAssy, the BeamAssy, conclusion |