... 1.with interchangeable head 2.Applying for a patent in USA, Germany,China,Taiwan now. Torque wrench features: 1.with ... read.6. Multiple engineering units :N.m,1b.,1b.in,kg.cm.7.With fuctions keys of zero-tracking, ... shows different value.This Innovation Designis Applying for a patent in USA, Germany,China,Taiwan now.Specification: ModelInterchangeableheadTorque rangeLengthNm1b-ft1b-inkg ...