Today, there is a detail.dtl option as to what kind of mark you wanted at the false center, none, filled_dot or cross. I remember the post complaining about the poor control over the dimension's appearance. I wonder when the z-radius became more intelligent. This is where you most commonly find the zigzag in a dimension line. With broken view, again, you will see both ends of the dimension. I will add the double arrow method to add a reference dimension to clearly note which surface is used as the reference or clarify a GD&T datum surface.
I use it often when I have a view that has the dimension noting a diameter in a full section view (full dimension) and I have a detail view of only one edge with details. In the case of the double arrow and erased leader on one end, it is accepted that somewhere on the drawing, you will find the appropriate reference for the "other end" of that dimension. NTS is only used when both leaders are shown. I have also seen adaptations where the dimension was appended with "NTS".
ISO introduced underlining the dimension value itself as an alternative. This is the zigzag you see in some dimension lines where the true length is not represented.
Jakub, true that you do not get this option in model annotation. 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. You may also use "Start a topic" button to ask a new question. If you would like to provide a reply and re-open this thread, please notify the moderator and reference the thread. This thread is inactive and closed by the PTC Community Management Team. Sorry if I seem angry.Creo Parametric will do this to you. These dimensions need to be shown model annotations, no added dimensions are acceptable. Using the Z-radius dimension is not an option (however the result of using this is the result I am looking for) and I am also not interested in some "workaround" that involves drawing a bunch of lines and other garbage on my drawing with a sketch. I have two radii and a linear dimension that I would like to do this to. How do I convert / make a shown model annotation on my drawing into a foreshortened dimension. Before you slap pitch circles all over your plate, think about your inspectors.I am running Creo Parametric 2.0 M030. Today, with most machine shops going immediately to CNC, I would think, this was much less important. Confronted with any other drafting style, they would re-calculate all the coordinates. It allowed them to zero their milling machines and manually move from coordinate to coordinate. When I started out, I was told that machinists liked drawings to show all features from the same datum. You follow the rules of grammar, and you organize for clarity. A good drawing is like a good written paragraph. Your drawing is your primary communication with the outside world. Often, I am able to place milled feature ordinates on one side of the part, and hole coordinates on the other side. On occasion, I have moved features in my design to assure readability on my drawings. Make sure dimensions are readable and that you can see which line connects where. Pick appropriate origins as per CheckerRon. Once you resort to the solution of ordinate dimensioning, all the standard drafting rules apply. I do all sorts of parts with dozens of holes and other features in them, where anything other than ordinate dimensioning would be an unreadable mess. Dimension 0 (zero) tells you where your origin is, and all dimensions, regardless of which side they are on, come from it. I am not aware of a CAD package that attaches arrows to your ordinate dimensions.