Metrica is a wall metal bookcase with glass shelves designed by CtrlZak for the brand Mogg, made of iron rod and finished in Burnished or Titanium color and with included crystal shelves in bronze or green stopsol. The simple structure exploits the cadenced rod industrial processing in different diameters and according to an irregular partition. The essential volume is delineated thanks to the match of straight lines: the rhythm is punctuated by the rods positioned at different intervals on a seemingly rigorous structure where the books and objects will complete the shape, writing from time to time new compositions.