The dmk 850 34 inch drive torque wrench has a range of 250 850 newton metres and 185 630 pounds force feet in a dual scale micrometer type scale on the barrel of the wrench which is easily adjustable with integrated ratchet mechanism for general industry use the wrench is classified to din en iso 6789 2003 type ii class a and comes with a factory issue calibration certificate calibrated to 3 deviation on reaching the torque setting the release system triggers a tactile and audible sign