Autodesk AUTOSKETCH 8, User Manual

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Chapter 18 Creating Dimensions
Centerline Dimensions
Often you must mark the center of an arc or circle. A centerline dimension
allows you to do this. It consists of a cross marker at the centerpoint and four
lines extending through the quadrant points. In the case of an arc, these lines
are drawn regardless of the arc’s included angle.
To mark the center of an arc or circle
1 On the Draw menu, click Dimension, Centerline, or click Centerline
Dimension on the All-In-One toolbar.
2 Select an arc or circle. AutoSketch draws the centerline dimension.
Ordinate Dimensions
Ordinate dimensions are used to note the x- or y-coordinate of a specific
point. AutoSketch measures the coordinate either from the drawing origin or
from a temporary origin you specify. You must specify two points to create
an ordinate dimension: an ordinate point and a text point. The position of
the text point in relation to the ordinate point determines whether the x- or
y-coordinate is displayed. AutoSketch automatically calculates the value
displayed in the dimension label based on settings in the Dimension Format
dialog box. For information on formatting an ordinate dimension, see online
Help.
To note the x- or y-coordinate of a point
1 On the Draw menu, click Dimension, Ordinate, or click Ordinate
Dimension on the All-In-One toolbar.
2 (optional) Specify a temporary origin by pressing CTRL while you enter a
point. Until you cancel the command, AutoSketch continues to measure
all ordinate dimensions from this point.