locating large round parts on CMM and clocking them

If they are straight cylinders, and there is not even a single feature except for the straight walls and the faces, you will just have to use machine axis for rotation. If it were me I'd probably try to find some sort of score mark on the face that stands out

it has very many features to measure at all different angles

Oh, then you can pick any feature that is easiest for you to measure on the side for the rotation, whether it be a slot, or a circle

that's not what I am talking about, how can I locate this heavy part on the table and be able to move it and turn it to the proper clocking with it being so heavy?

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Sorry about that. I overlooked the "put on machine" part when reading your statement. Others here who measure these large parts have had them dropped off with a forklift on a pallet. Or some have access to cranes for lifting them onto the CMM. Adjust clocking while part is lifted by the crane. I can't say I'd be able to safely do it myself without a crane.

Sorry about that. I overlooked the "put on machine" part when reading your statement. Others here who measure these large parts have had them dropped off with a forklift on a pallet. Or some have access to cranes for lifting them onto the CMM. Adjust clocking while part is lifted by the crane. I can't say I'd be able to safely do it myself without a crane.