MicekR says there is a special button for that in WF5 "This is a Z-Raduis dimension. Center point location is picked on the screen. " * * *I was also corrected in what the nomenclature and type for this symbol is. This is a Z radius, and it is a radius that i drew not a diameter dimension. I also learned that the double arrow is specified in the ASME Y14.5M standard but the Z radius is not. It is a sort of best practice that has not been incorporated into the standard. There are some issues about how the position of the radius center is known see here:* This thread is inactive and closed by the PTC Community Management Team. If you would like to provide a reply and re-open this thread, please notify the moderator and reference the thread. You may also use "Start a topic" button to ask a new question. Please be sure to include what version of the PTC product you are using so another community member knowledgeable about your version may be able to assist.