Recipe creating system, length measurement system, and recipe creating method

According to the present invention, a design image based on design data is set for each image acquisition condition, and a length measurement cursor is set in each of the design images. This recipe creating system for creating a recipe in which a procedure for measuring the length of an observed object is described, involves executing: a storage process of storing design data of an observed object including a plurality of layers; a layer-setting process of setting, from among the plurality of layers, at least one layer for each image acquisition condition for the observed object; and a length measurement cursor-setting process of setting a length measurement cursor indicating a length measurement region of the observed object in a design image formed by a design present in the at least one layer set in the setting process.