Hi @outdoorman I'll show you both methods in two different replies. Both will assume that your part is drawing concentric to the origin. If your part isn't concentric to the origin, let me know and I'll show you how to make a construction axis and the proper construction plane. In my examples I'll be using the origin planes.
Start a new sketch and choose one of the origin planes that runs through the center of your part.
Once you choose that plane, you will be taken to a view normal or perpendicular to your sketch plane. There will be a sketch palette typically on the right side of your screen. Check the slice option. When you do that, your sketch will look similar to the screen shot below, though potentially a different color may be used.
Now you are going to project the ouline of that body. Go to the create menu and then choose Project/Include --> Intersect.
In the Project Geometry dialog, choose the body option and the select your solid body.
Now you can use the dimension command. When you place a dimension, you will get a warning that you are creating a driven dimension. That is fine for what you want to do because you just want the dimensions of the features.
If you want radius dimension, from the Create menu, select point and then place a point at the midpoint of one of the vertical lines on the end of the part. Then dimension from the point to the feature you want the dimension of.
And that is how you can use a sketch to create the dimensions you want. Next I'll show you how to create a drawing.
Kevin Ellingson
Technical Specialist
If my post resolves your issue, please click the Accept Solution button.