Review on EPAuto 1/4-Inch Drive Click Torque Wrench: Precise Torque Control for 20-200 in.-lb. / 2.26 ~ 22.6 Nm by Kevin Webb

The headline says it all. If you're fixing a bike, and it requires a certain number of newton meters of torque, you'll feel much better if you actually use a torque wrench. Ideally, you'd also have a set of Allen (hex) wrenches that fit a 1/4" drive wrench. Sure, you can do it by feel, but you'll always be under- or over-tightening the fastener, no matter how sensitive your touch. Get this wrench and be certain.