[haris]

Few days ago I wached documentary about building new bridge in France, the world tallest bridge. And I saw in one moment some gadged which was used, I think, to precisely calculate path of build, because bridge was bulit from both side simultanioulsy and those sides were connected on about 1/3 lenght of brige on one side. That gadged looked like round "box" on tripod. On gadget were written Leica...