The utility model relates to an instrument designed to be used as a ruler, whose purpose is to facilitate the measurement of oral lesions and skin.Using as parameter the classification according to the TNM (tumor, nodes metastasis) system proposed by the American Joint Commission on cancer (AJCC) and the Union for international cancer control (UICC)Which is followed throughout the world. Therefore, it can also be used to classify a malignant lesion in the TNM classification.Presents the functionality of the differentiation of each measuring unit of classification for a particular color, which gives more agility and reliability of the measurement.
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