Centerline Dimensions. Autodesk AUTOSKETCH 8

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.

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Chapter 18 Creating Dimensions