This work discusses the protocols used for calibrating the measuring tools in physical quantity: length, mass, temperature, pressure, electrical variables, volume and strength, in the light of national and international technically valid standards. This work seeks to support the training activities in Industrial instrumentation and Metrology areas, for the different programs of higher education that include in their curricula measuring as a necessary component of the training of students and whose main goal would be to train students to be aware of the processes of calibrations and its impact on the quality of production processes.