GU Optics's Vertical Mounting Plate can mounts 30 mm and 60 mm cage systems vertically on an optical table surface. Side-located counterbored slots can be used to securely mount the plate onto an breadboard. There are eight holes on the top plate surface for Cage Rods, four of the holes are placed on 60 mm centers for constructing 60 mm Cage Systems. Another set of four holes, on 30 mm centers, are for constructing 30 mm Cage Systems. An SM1-threaded hole in the middle of the plate can compatible with all SM1-threaded components, post rods are held in place by side-located M4 x 0.7 setscrews.