A member wants info on extension correction formulae (see thread title).A 1000 post member blindly directs him to erroneous data.I point the errors out and offer a useful formula ,steeling myself for an intellectual rebuttal that never comes.Instead let's change the subject to a Miss Manners lesson. Now we have a 2000 post member chime in.You both disagree with me,but neither of you have shown the relevance of torque wrench length in the formulae you seem to offer. Scotty