Number of individual mirrors: 4 Piece(s); Functions: Easy axial alignment, Adjustable, 3 directions, Automatic resetting after mechanical impacts with special spring elements, Precise alignment of the individual mirrors in all 3 axes, Simple height adjustment of the mirrors; Dimensions: 160 mm x 1,360 mm x 149 mm; Column height without foot: 1,300 mm; Center-to-center spacing of individual mirrors: 300 mm