The U.S. Geological Survey National Mapping Program is being shifted to metric as rapidly as possible. John I. Roney, Branch of Cartography, USGS, explained that ‘due consideration’ is being given to states and other map users who want some conventional-scale mapping completed before the metric changeover.
‘The USGS policy provides that all new and completely revised small-scale maps (1:250,000 and smaller) and intermediate-scale maps (1:100,000 and 1:50,000) will be prepared in the metric system. Completely revised 1:24,000 scale maps (the basic large-scale maps by the USGS) formerly published in the U.S. customary system will now be prepared and published in the metric system at 1:25,000 scale. ‘New standard quadrangle maps will be prepared in either system or a combination of the systems for the time being,’ he added, ‘depending on the particular situation in each state.’