Traceability Chain and Dissemination of Angle Measurements in Brazil

The paper describes the metrological hierarchy established for the dissemination of angle measurements from the “Dimensional Metrology Laboratory” (LAMIN) of the “National Institute of Metrology, Standardisation and Industrial Quality” (INMETRO). It shows the traceability chain from the national standard of length to the reference system, a small angle generator, and then to angle standards and measuring equipment. The practical benefit of the work described is the dissemination of angle measurements in Brazil, with adequate metrological confidence, from INMETRO to accredited laboratories of the Brazilian Calibration Service (RBC) and other users.