Skinfold calipers are used internationally in research, clinical, and field settings to assess body composition and nutritional status. Notably, currently available instruments differ in important specificities that impact measurement. In this sense, this report proposes a methodological approach that organizes skinfold calipers into three categories (Original, Generic, and Hybrid) and three configurations (Type A, Type B, and Type C) based on physical-mechanical properties and characteristics. Therefore, this concept provides technical support for choosing the most appropriate skinfold caliper in different contexts.