???? ??????? ? ??????? ? ????? ? ??????????? ? ?????? ? ????? ? ?????? ? ??????? ? ??????? ? ??????? ? ??????? ? ????? ? ????? ? ????????? ? ???.e. two co-ordinates in to Track down it horizontally, and one co-ordinate from the vertical plane into the horizontal plane might be set up or measured only with finding it vertically with regard on the da