Originally Posted by
Roelof
And that can only be used if you know a calibration value but will never messure the real clearance. As stated before, there are different shapes in pistons and so also bombustion chambers even for 1 model engine, so you can never be sure.
Well, for flat top pistons just put the tool in the head with the head off and push it down on a flat surface. Then zero it and put it on the motor. Off course, by the time you did all that the solder trick would have given you the answer.