A guide for evaluating the technical and economic feasibility of standardizing automatic test and checkout equipment. Five levels of standardization are defined: component, functional module, functional assembly, tester assembly, and testing system. Two opposing opinions are presented on the desirability and feasibility of standardization. Technical factors relevant to standardizing automatic checkout equipment are discussed, as well as factors dealing with economic feasibility. The potential effects of such standardization on weapon-system cost/effectiveness are indicated. In addition, some pertinent points of inquiry concerning the various levels (above the component level) are outlined.