The present invention provides a positive identification of each ECG lead (12,16), both visually under varying illumination conditions as well as by touch only, including identification with gloved hands.In addition, in several embodiments (20, 24) the lead anthropomorphic shape unambiguously indicates the lead placement on patient's body.This construction and features of the present invention enable fast and accurate identification of the ECG leads and ensure their correct placement on the patient's body.