Scale: 1:250000; Projection: Lambert conical orthomorphic projection; Map Type: lcgft; Other Descriptive Notes about Map Series: Relief shown by contours, gradient tints, and spot heights. Five classes of railways and five classes of roads are shown. Covers area west from Groningen, Netherlands to Oldenburg, Germany to the east, and north from Wangerooge, Germany to Friesoythe, Germany to the south. Oldenburg roughly at lower right corner of sheet. Sheet K 54, Oldenburg from series issued in various editions by Geographical Section, General Staff, No. 4346. Military grid. Nord de Guerre Zone Grid ... Spheroid, Du Plessis.. Heights in metres.. Certain main spot heights are indicated by a white tab to improve legibility.. Includes legend, Incidence of grid letters diagrams, Convergence for corners of this sheet diagram, To give a grid reference on this sheet, Grid data: Nord de Guerre Grid, index to adjoining sheets, index to corresponding 1:100,000 scale sheets, Conversion table, Authorities, and Glossary.