 
                                                    
                                               Topographic survey of Portugal at 1:100,  000 from the Instituto Geográfico Português,  the country’s civilian survey organisation. The maps have contours at 50m intervals & in addition to the standard features shown on topographic mapping at this scale also indicate various types of vegetation (vineyards,  olive groves,  etc). Each sheet covers an area of 64 x 40km (40 x 25 miles approx). The maps have latitude & longitude margin ticks at 1’ intervals,  plus show UTM coordinates for the map corners. Map legend is in Portuguese only.PLEASE NOTE
- EDITION DATES: some sheets at this scale date back to the 1950s or 1960s. For more recent editions please see IGP’s 1:25,  000 series where each 50K map is divided into four quarters. To see all the titles in the 1:100,  000 series please click on the series link.                                             
