Search results

Metal disk 1.5 to 3 inch from base as best you can, then stick a breaker with a wide chisel to break up concrete at that level. also you can probably break through the last few inches of metal with the the breaker. Then put sharp point bit on breaker and break up concrete in center of post down...

And that is how you check torque. Also an experianced tech will know the torque of his/her impact the same way you know where the light switch in your bedroom is.