Norbar 15005 Pro 300 Adjustable 'Mushroom' Head Torque Wrench Dual Scale 1/2in Drive 60-300Nm 44-220 lbf·inThe New Professional torque wrench has been re-engineered to be even more precise strong and easy to use. The square drive features a finger grip on the top ('mushroom' head) that assists with running down the nut until resistance is met.Features:Factory calibrated to +/-3% and our new mechanism ensures that the accuracy is retained for longerEvery wrench is supplied with a calibration certificate to satisfy the requirements of ISO 9000:2000Ergonomic new handle with a high proportion of soft-feel high grip materialHandle material and lens resist all chemicals in common automotive industrial and aviation useSecure push/pull locking mechanism is quick and intuitive to use and prevents accidental adjustmentLarge scale window and long scale length for great visibility and accurate settingComes With:Calibration CertificateCaseSpecification:Accuracy: ±3%Operates Between: 60-300Nm/44-220lbf ftSquare Size: 1/2inRatchet Teeth: 60Ratchet Diameter: 51mmLength: 593mmRatchet Type: Industrial 'Mushroom' headPTDTSADIRNOR15005