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Compilation scale | Contour range 1 (m) | Vertical Interval 1 | Contour range 2 (m) | Vertical Interval 2 | Contour range 3 (m) | Vertical Interval 3 |
|---|---|---|---|---|---|---|
| 1:50,000 | 0 - 100 | 5 m | 101 - 400 | 10 m | 401+ | 20 m |
| 1:10,000 | 0 - 10 | 1 m | 11 -100 | 5 m | 101+ | 10 m |
| 1:250,000 | 0 - 200 | 10 m | 201 - 400 | 20 m | 401+ | 50 m |
| 1:1,000,000 | 0 - 500 | 50 m | 501 - 3000 | 100 m | 3001+ | 500 m |
See this link document for more information:
https://www.ukho.gov.uk/Defence/AML/Documents/Item%2025%20%20AML_Production_Spec_1.pdf
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