The article is based on the generalization of expert practice on investigative testing of filling devices, for example, the study of anchor-type seals. The study is based on an example of research of “Karat” type seal. As examples, the list of signs and traces that are formed on the surfaces of seals of similar types, in the process of their opening. The descriptions and illustrations of the revealed traces are given, which remain on the seals of the anchor-type “Karat”. The article also describes an algorithm for conducting similar studies and an approach to a comprehensive evaluation of the traces themselves and justifies the need to determine the mechanism of their formation and identified. The article raises the problem of both a possible complex study of anchor-type anchoring devices and problems arising from the incorrectness of the questions posed to the expert, which can lead to unreasonable and incorrect conclusions.
According to the results of the analysis, recommendations were given regarding a comprehensive expert approach to assessing the characteristics that reflected in the traces which identified at the objects of the study.