• Use for accurate tightening of head and manifold bolts whenever a torque angle is required by the manufacturer's specification
• Also called "torque to yield"
• Battery-type clamp frees up hand
• Use with 1/2" drive tools

Instructions:

Using a regular Torque Wrench, take the bolt to a very low reading, then turn it a certain number of degrees beyond that.  For example, 90 degrees, but up to 180 degrees. 

Then wait and go back go another increment, possibly 45 degrees