Our guide correctors continues with 11 optical lenses which magnification is10x to ensure image sharpness and micro deformation; imaging screen is no deformation due to make with annealed aluminum alloy sheet and carve pass lines with CNC machine; the guide seat ensure no deformation and is not afraid to bump by making with micro deformation alloy steel and heat treatment; lighting source is not only more efficient in power saving and a long service life (more than 50000 hours) by using LED, but also avoid the trouble of replacing lamp and structural adjustment. Therefore the guide corrector is maintenance-free in lifetime.