getting camshaft duration numbers on an out of engine cam

my68barracuda said
saw a posting that mentioned using a V block set up to measure duration @.050 and @.002 on a cam shaft out of an engine.
I know how to use a degree wheel to set the cam timing on an installed cam.

to save me from having to re invent this, can some one post a description and photos of their set up for checking a cam on a bench.
Do you attach a degree wheel to the front of the cam?

Ill have to take a pic later but yes, i have a set of heavy steel v blocks, degree wheel on the cam, a dial mic on a mag base, and a pointer on a magnet. That's all, way easier than degreeing the cam in the motor.