I have been degreeing cams for a long time, and when this tool came out, I bought one. It works very well, makes the process a lot easier, and you don't have to worry about a magnetic base slipping or the lifter hanging in the bore. It expands in the lifter bore, and is spring loaded, works super.

https://www.speedwaymotors.com/Camshaft-Dial-Indicator,9868.html?sku=58666838&utm_medium=CSEGoogle&utm_source=CSE&utm_campaign=CSEGOOGLE&gclid=EAIaIQobChMI8bXX4_vT6AIVE8JkCh1eHQCXEAQYAiABEgIkcvD_BwE