Scaling by Reference in AutoCAD

When you scale by reference, you use the size of an existing object as a reference for the new size. To scale by reference, specify the current scale and then the new scale length. For example, if one side of an object is 4.8 units long and you want to expand it to 7.5 units, use 4.8 as the reference length and 7.5 as the new length. You can also specify the reference length by selecting a base point and two reference points and dragging to specify the new scale. A quick way to change the length of open objects such as lines, arcs, polylines, elliptical arcs, and splines is to lengthen them.

You can use the Reference option to scale an entire drawing. For example, use this option when the original drawing units are inappropriate. Select all objects in the drawing. Then use Reference to select two points and specify the intended distance. All the objects in the drawing are scaled accordingly.

scaling-reference
To scale by reference

  1. From the Modify menu, choose Scale.
  2. Select the object to scale (1).
  3. Specify the base point (2).
  4. Enter r (Reference).
  5. Select the first and second reference points (3 and 4), or enter a value for the reference length.
  6. Drag the object and select a point (5), or enter a value for the new length.

Command line SCALE
Shortcut menu Select the objects to scale, right-click in the drawing area, and choose Scale.

1 comment so far ↓

#1 Preston on 02.20.13 at 10:19 am

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Thanks ,Martha

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