What tools for degreeing cam

It's meant as a building tool, not a do over tool...So to speak lol. Head should be off, we finding TDC when decreeing the cam, right? Ime The further away you get from the lifter the greater the potential of error with a 59 degree lifter angle sb.
No. Sorry. Nice try tho. I don't need to tear it down to a bare block just to change a cam. What is this called? OH I know. "versatile."