The present invention concerns an indication mechanism for an automatic applicator, particularly for insulin or other liquid preparations, particularly for multiple injection administration of set doses of a medicine from an exchangeable container, for example for the self-application of insulin by diabetes patients. An indication mechanism for an automatic applicator, comprising an assembly of at least two barrels movably coupled to each other is characterised in that a dose indication barrel (2) is mounted on a driving barrel (1) ands contains only a dose scale (2.1) on its external surface and is further co-axially connected to a pull-push control nut (3).