The other day I was asked how to place diameter symbols on dimensions that show a revolved modeling feature so that the user didn't have to modify it with each dimension.
Well we can do this a couple different ways, we can simply add a diameter override to each dimension (boring and you will give yourself repetitive click syndrome).
We could aslo just add a dimension style that has a prefix of the diamter symbol for the entire style and you just use that one when you want.
We can also force a Linear Diamter by right clicking the dimension when placing it, but it will create a slightly different look to it than the above image. If that is what you want, awesome! You can stop reading and get drawing. I have one more way after this, so just indulge me and read on a little further to see how we can control this from the very beginning of part modeling.
Inside a new part sketch you have the option to use Centerlines and Linear Diameters to accomodate the visual design intent that aids in the initial design as well as design changes to the model. Once you have your rough profile sketched out for your revolved feature. Now with the General Dimension tool, start by selecting what your axis line would be and then select the line you want to put a diameter to. Then right click and select the toggle for Linear Diameter.
To save some time, you can make your axis line a Centerline type and then all your dimensions from this line will automatically be Linear Diamter type.
Once these exist in the model its very easy to simply reuse them in the drawing environment. Once you have your placed views, right click on one of them and use the Retreive Dimensions command. Here you can select which Linear Diameters you want to expose to the drawing side.
Now, not only do we have the correct dimensioning scheme, we can also modify the modeling dimensions right from the right click menu. This way we don't have to go back to the original model to make those modifications. Beware, you should also understand where your model is used in case your change will affect assemblies or adaptive parts.