Autodesk 24000-000000-9860 - Revit Architecture - PC User Manual page 275

In addition, multi-segment dimension lines recognize when adjacent segments are too small for arrows to
fit. When this occurs, the ends of the short-segment string flip, and the inner witness lines display the
interior tick mark type designated in the dimension properties. In the following image, the dimension arrows
flip to the exterior of the dimension line and the witness lines display the designated tick mark (diagonal).
For information on changing the tick mark for a dimension line, see
Mark on page 236.
To control the display behavior of dimension arrow tick marks:
1 In the drawing area, select a dimension and click
2 In the Element Properties dialog, click Edit/New.
3 Edit the following parameters:
Flipped Dimension Line Extension: when dimension arrows flip, this controls the length of
the dimension line beyond the flipped arrows. Length is measured from the end of the arrow
head.
Interior Tick Mark: designates the tick mark display for inner witness lines when adjacent
segments of a dimension line are too small for arrows to fit. When this occurs, the ends of
the short-segment string flip, and the inner witness lines display the designated interior tick
mark.
Changing the Dimension Line Tick
(Element Properties).
Modifying Dimensions | 237