| Publication data | |
| First published | 1912 |
| Last revised reprint pub. | 1912 |
| Sheet data | |
| Number of sheets | 132 (planned) 1 (published) |
| Sheet size | 24mi × 18mi |
| Technical data | |
| Geodetic datum | ? |
| Ellipsoid | Airy 1830 |
| Projection type | Bonne |
| Projection origin | 57.5°N 4°W |
| Unit of measurement | Foot of O1 (0.3048007491m) |
| Map scale | 1:63 360 |
1912: A one-sheet oddity
The 1-inch Fourth Edition of Scotland used survey information from the third national revision of 1910, which was abandoned. Only one sheet in the series was published: sheet 26, covering a small portion of Berwickshire and Roxburgh, although the vast majority of the sheet consisted of England and was thus left blank!
The series was superseded by the introduction of the 1-inch Popular Edition of Scotland.
Page last updated: 14 April 2012