When using offset pair coded targets, this option allows you to set a series of scales based on the distance between the two targets that define the offset (see Offset Points and Create Coded Targets Dialog where offset targets can be created). The distance between two of the targets needs to be carefully measured, then entered with the units and target ID Range. Using a series of scales applied to these point pairs throughout the scene helps spread the scale across the model and can help improve reliability and accuracy of the model (see also Setting Scale).