Date of this Version
The minimum unambiguous citation for this document is AMS Memo 425, Feb 1945.
Covers the policies and practices of the Army Map Service and shows standard grids and grid data on military maps including British, American polyconic, and American domestic grids; the content and composition of declination diagrams and notes; grid protractors; the treatment of various grid intervals, overlapping grids, grid notes and reference boxes.
Two loose charts were found in an envelope with this document.
Appendix I: US Grid N.E.I. Equatorial Zone
Apendix II: Index of American and British Grid Systems