The Norbar Professional Torque Wrench Models 650 – 1500 are highly accurate up to a reading of ±3%. The wrenches are non- length dependent. An extension handle can be used to reduce operator effort (handle supplied as standard with Model 1000 and 1500). The wrenches are easy to use; a positive ‘click’ can be heard, seen and felt, helping to prevent over torqueing. Have a long scale where the length is shown in Nm and lbf.ft. The fine 60 tooth ratchet allows the wrench to be used in confined areas. Supplied with a Calibration Certificate, which meets the requirements of ISO 6789-2:2017.Model 650 Torque Wrench Specification Drive: 3/4in Square. Range: 130-650Nm (100-480 lbf.ft).Torque Radius: 744mm.Ratchet Teeth: 60.Ratchet Type: Push-Through.Length: 886mm.Weight: 4.0kg.Additional Information:• Type: 3/4in Drive Wrench• Capacity: 130-650Nm