A multilayer wire-grid polarizer for polarizing light includes a stack of thin film layers disposed over a substrate, including a wire-grid array of elongated metal elements having lengths longer than a wavelength of the light and a period less than half the wavelength of the light. One or more shim components having a surface area substantially the same as at least the surface area of the bottom of the base member is used to adjust the vertical angularity of a post secured to the base member. Accordingly, the reliability of the flash memory can be improved while securing a high coupling ratio. The corresponding values in the specification list are added to the individual location paths. A tool is also provided for removing the broken tip.