This is the best one ever. It is designed to be used on the engine, but if you clamp the head to the table it works great. I JUST used it 3 minutes ago to check piston to valve clearance with my current cam so I can see what size roller I can go to.

Comp Cams 5324

11.33 @ 118.46 on motor
10.75 @ 125.35 w/ a little spray
Now, high Speed Open Road Racing - Silver State Classic Challenge, Nevada Open Road Challenge, Big Bend Open Road Race
Rocky Mountain Race Week 2020, 2022 2.0, Sick Week 2023