Autodesk 24000-000000-9860 - Revit Architecture - PC User Manual page 261

Selected dimension with locked and unlocked controls
Clicking on the lock switches it between the locked and unlocked state. Once a dimension is locked, you
must unlock it to change its value.
TIP You can also switch the locked and unlocked state of the lock by right-clicking on it and choosing Toggle
from the menu.
Also see Applying Constraints with Dimensions
Anchoring Elements Referenced in Multi-Segmented Dimensions
In a multi-segmented, equality constrained dimension, you can use the anchor symbol to designate the
anchored element. The element that is anchored remains stationary while you move other elements in a
dimension.
1 Create a multi-segmented dimension. See
information on creating dimensions.
2 On the Design Bar, click Modify.
3 In the drawing area select the dimension, and click the Dimension Equality symbol (
make the dimension equally constrained.
4 Select any element the dimension references, except the one you want to anchor.
An anchor symbol appears near the dimension.
Equality dimension with selected element shown in red
5 Click and hold the anchor symbol. A witness line appears for the anchor.
6 Drag the anchor symbol to the element you want to anchor.
7 Move any of the unanchored elements referenced in the dimension.
The element accompanied by the anchor does not move.
NOTE If you select the element the anchor is currently attached to, this also moves the position of the anchor.
on page 247.
Placing Permanent Dimensions on page 215 for
Permanent Dimensions | 223
) to