Anyone that works on engines need at least an inch pound torque wrench and a larger foot pound one. Don't know what I would have done without the old Snap On 100-600 inch pound one I had. Used it more than any other.Goes from around 8 to 50 lbs max.You can get them everywhere now a lot cheaper than I paid for one.http://www.ebay.com/itm/Snap-on-3-8-drive-inch-pounds-clicker-style-Torque-wrench-swivel-head-TQFR50C-/271892460610?hash=item3f4e0db442&item=271892460610&vxp=mtr Loved it! Just set to inch pounds desired,closed the set bar and no spring to have to unwind when you're through.