| Year | 1921 |
| Date | 15-Sep |
| Volume | 45 |
| Issue | 1,064 |
| Page | 226 |
| Category | Practical Letters from Our Readers |
| Part | |
| Title | Model Engineering and the Boy Scouts' Association |
| Author | Edw. A.Urquhart |
| Notes | Member of the Scottish Executive Committee, Boy Scouts' Association. Model contour map for instruction purposes |