An essential compass for more experienced navigators the expedition 4 can be used with havey maps thanks to the 140000 scale option features silcone feet for a more secure map hold and luminated points for night navigationcolour swatchcleardofe recommendedyesadditional notesa full size base plate compass for experienced navigators used by defence forces all over the world full size baseplate compass for experienced navigators perfect for use with gps 125k 150k 16336k mm and inc