7221 Portland 1:100k Topographic Map 130% 🧭 Field navigation

🧭 Field navigation

warp or disintegrate in wet or windy conditions

Fishing enthusiasts needing accurate location and zone data

whether on the road or at home

7221 Portland 1:100k Topographic Map 130% 🧭 Field navigationAt a scale of 1: 100,000, 1cm on the map represents 1km on the ground. Each map covers a minimum area of 0. 5 degrees longitude by 0. 5 degrees latitude or about 54 kilometres by 54 kilometres. The contour interval is 20 metres. Many maps are supplemented by hill shading. Topographic maps show contours, spot elevations, streams, roads, buildings, place names, vegetation and administrative boundaries. They are used by emergency services, environmental