Glossary for Geospatial Science

7.5' map:� A standard topographic map quadrangle size that covers 7.5 minutes of latitude and 7.5 minutes of longitude.� For example, the 7.5' map for Crow Butte, Nebraska covers from 103� 15' to 103� 22' 30" west, and 42� 37' 30" to 42� 45' north (about 8.6 x 6.4 miles or 55 square miles at that latitude).� USGS quadrangle maps are common in both 15' and 7.5' sizes.� (See also: minute.)