Dial torque wrenches are designed for the automotive, nuclear and industrial markets in addition to military installations throughout the world. This series features sturdy torsion beam design for dependable long life and accuracy. The small frame model offers working ranges from 3 in-lb to 50 ft-lb in 1/4 in and 3/8 in drives. The large frame model continues from 100 ft-lb through 2000 ft-lb with 1/2 in, 3/4 in and 1 in drives. Accuracy of both series of +/-3% meets or exceeds ASME standards, ISO 6789 bi-directionally from 20% to 100% of scale. All wrenches supplied with a NIST Traceable certificate of calibration.