This style of torque wrench offered by Stitt is mandatory for a proper spark plug installation. Unless the pointer becomes damaged, this is the most accurate style of torque wrench that can be used over the long term.

It is better than any "click" type wrench which uses a spring-loaded mechanism. Springs fatigue. But most importantly, the Beam-type wrench requires a slow procedure if the scale is to be read accurately. This scale inhibits the "clean and jerk" methods that are often used with the "click" style of wrench. If that method is used, the spring-loaded mechanism will "click" but the true level of torque may be many times greater than the indicated setting. For accurate torque, only this style of wrench can be recommended.