A method and configuration to estimate the dimensions of a cuboid. The lock springs are arranged parallel to each other in an X-direction. The control gear is controlled by a momentum control which includes a disc and a slide which carries a magnet for selectivity allowing or preventing rotation of the disc to in turn change the speed of rotation of the control gear. The drain diffusion region includes a deep diffusion portion which has a 11000 or more concentration of a peak concentration of the source diffusion region and which is positioned deeper than the source diffusion region. The viewport region is disposed and movable within the thumbnail region.