ACCURATE, EVEN UNDER INTENSIVE USE. High performance - Intensive use : reliability of mechanism tested to 50,000 cycles. Durable accuracy : remains within ISO 6789 tolerances after more than 5,000 cycles. Accuracy set at +/- 2 % ex works. Safe - Accurate, tamper-proof vernier. Easy to read and set for error-free adjustment. Automatically locking torque adjustment. No risk of accidental release. Ergonomic - Ergonomic handle. Increased length for improved torque transfer and accuracy. Hanging ring for storage.