Ideal type is a construct or model for evaluating specific cases.
Defintion Two:
Ideal type means Weber's construct of a “pure type,” an analytical tool created by emphasizing logical or consistent traits of a given social item. The traits are defining ones but not necessarily desirable ones. Ideal types do not exist anywhere in reality; rather, they serve as measuring rods that can be used in comparing social phenomena. One example is Weber's ideal type of bureaucratic organization (which is anything but desirable). More widely used and understood examples include "ideal democracy" and "ideal capitalism."