A GUIDE TO THE ORDNANCE SURVEY ONE-INCH SEVENTH SERIES

Richard Oliver, 68pp, A5, softback.

The Seventh Series was the final stage in the development of the Ordnance Survey one inch to one mile (1:63,360) map before its replacement in 1974-6 by the 1:50,000 scale, and was the only completed uniform, or nearly uniform, map series to cover Great Britain at this scale. Though initially published between 1952 and 1961, its origins really lay in the 1920s, and in the desire to replace engraving and lithography by photo-mechanical methods for the production of the one-inch map.

This booklet, orginally published in 1986, describes the origins and development of the Seventh Series and provides comprehensive sheet listings of its various editions and versions, together with the tourist maps derived from it. The present edition improves on its predecessors by correcting a few minor mistakes, adding some further details to the introductory essay, and adding a new section on changes to the design and specification of the maps.