I'm having an argument with a mate about using a crowfoot with a torque wrench . Looking at the picture and imagining the distance between the centre of the 3/8" drive and the centre of the bolt head ( to be tightened ) I reckon the extra lever effect is going to put additional torque on the bolt head .... .... before the torque wrench clicks . My mate reckons LESS torque will be applied to the bolt .... and I won't have it Now I'm in danger of overthinking the whole thing ! I know there are some excellent engineers on here .... What sayeth thou ? .... and yes , I could have googled it .... - .