Autodesk 24000-000000-9860 - Revit Architecture - PC, User Manual

Page: 271 / 1646

Listening Dimensions
When you are sketching, you can explicitly enter a value for the sketch line by typing a number after you
begin the sketch line. This method is known as listening dimensions.
Typically, listening dimensions specify linear dimensions such as length. For example, the length of a line
(when drawing a line), length of a chord (when drawing the second point of a 3-point arc), length of a radius
(when drawing an arc, circle, or polygon). If there is no linear dimension, you can enter an angular dimension,
if applicable.
Listening dimensions are not available for some elements, such as splines or rectangles.
Following is a sample procedure for using listening dimensions to specify the length of a sketch line.
1 Begin sketching a line.
NOTE Listening dimensions initially appear in blue or black bold text.
2 Type the length value. When you type a number a text box appears, as shown below.
For example, if you need a line that is 8 feet 6 inches long, type the value as: 8 6.
3 Press Enter .
The sketch line is drawn the specified length.
Dimension Witness Lines
You can move witness lines to new references for temporary and permanent dimensions. You can also
control the gap between the witness line and the element for permanent dimensions.
Properties for witness lines are included with the type properties for permanent dimensions. See Permanent
Dimension Type Properties on page 238.
Moving the Witness Line for Temporary Dimensions
1 Select a component.
2 Do one of the following:
■ Drag the control (blue square) to a different reference.
■ Right-click the witness line control and select Move Witness Line from the context menu.
You can then move the witness line to a new reference.
Listening Dimensions | 233