The manner by which you dimension your sketch reflects your
• Dimension types include:
– Line length
– Diameter/Revolved Diameter
– Arc length
– Total included angle
• Middle-click to place dimensions.
– Location can determine type.
• Convert weak dimensions to
Figure 3 — Distance, Radius,
and Diameter Dimensions
When dimensioning a sketch, it is important to create dimensions that capture
your design intent because these dimensions are displayed when you edit
the model and when you create drawings of the model.
Dimensions are all created by clicking the Normal
icon. You can also
right-click and select Dimension. Select entities to be dimensioned and
middle-click to place the dimension. At this point, you can either press
ENTER to accept the current dimension value, or type a different one and
press ENTER. The type of dimension created depends upon what is selected
and where the dimension is placed.
The following dimension types can be created:
• Line length — Select a line and place the dimension. The line length
• Angle — You can create an angle measurement by selecting two linear
references. Where you place the dimension determines how the angle is
measured (acute versus obtuse). You can also create an arc angle by
selecting an arc endpoint, the arc center, and the other endpoint, and then
placing the dimension.
• Distance — Select two entities to measure the distance between them and
place the dimension. Again, where you place the dimension determines
whether it is vertical, horizontal, or slanted.
• Radius — Select an arc or circle once, then place the dimension. You can
toggle a radius dimension to a diameter or linear dimension by right-clicking
and selecting Convert to Diameter and Convert to Linear, respectively.
• Diameter — Double-click an arc or circle, then place the dimension.
You can toggle a diameter dimension to a radius or linear dimension by
right-clicking and selecting Convert to Radius and Convert to Linear,
• Revolved Diameter — Select the entity, a centerline, and the entity again
and place the dimension. Alternatively, you can select the centerline,
the entity, and the centerline again. You can toggle a revolved diameter
dimension to a revolved radius dimension and vice-versa by right-clicking
and selecting Convert to Radial and Convert to Diameter, respectively.
• Arc length — You can create an arc length dimension by selecting the
arc segment, its two endpoints, and placing the dimension. The arc
length dimension displays an arch symbol over the dimension value. You
can toggle the arc length measurement to an arc angle dimension and
vice-versa by right-clicking and selecting Convert to Angle and Convert to
• Total included angle — Similar to a revolved diameter dimension, you can
create a total included angle dimension by selecting an angled line, a
centerline, and the angled line again before placing the dimension. You can
toggle the total included angle to an angle dimension and vice-versa by
right-clicking and selecting Convert to Angle and Convert to Total included
Because Sketcher must maintain a fully defined sketch at all times, a sketch
initially is dimensioned using weak dimensions. As you dimension your
sketch (these are strong dimensions) using your desired design intent, the
weak dimensions automatically disappear