Bolted Joints Instrumented Washer Rondella (in fase di brevettazione). Strumento in grado di misurare la coppia di serraggio di tirafondi (Draco®) o l’efficienza di un giunto bullonato. TECHNICAL DATASHEET Instrumented Bolt Instrumented bolt. Instruments capable of measuring the tightening torque of bolted joints.Only available to order starting from a diameter of 12mm. The DRACO® System The loT instrumented washer for monitoring the tightening torque of anchor bolts. Convegno VISIONESICUREZZA2021 Inventor's presentation October 12th, 2021 - Autodromo Nazionale Monza