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Scale Command

Here are a few tips for when you click the Scale button on the Modify Toolbar By Jos van Doorn
The Scale command can be invoked by clicking the Scale button on the Modify Toolbar or by entering Scale at the command prompt. Also SC can be entered at the command prompt to invoke the Scale command. SC is an alias of the Scale command as specified in the ACAD.PGP file.

The Scale command starts with the following command prompts:

Command: Scale

Objects are selected at the second prompt. When all objects have been selected a RETURN is entered. The prompt for a Base point is displayed.At the prompt for the Base point a point is entered. The selected objects are scaled starting at that point.

At the last prompt a scale factor can be entered. There are two ways for entering the scale factor: entering a number or entering a points.If a number is entered it must be positive and nonzero. A negative value or a zero value is not accepted. If such a value is entered a warning is displayed. If a point is entered the size of the selected objects is always increased. The position of the point doesn't matter.

The Reference option helps to scale selected objects very accurately. Objects can be scaled to fit other objects.To invoke the Reference option R is entered at the last prompt. The following prompts are displayed:

For the reference length a number can be entered. Also two points can be entered. If two points are entered a length is determined. At the second prompt a new length is entered. That's done by entering a number or by entering a point. If a point is entered the selected objects are dragged. If at the first prompt a number is entered then two points can be entered at the second prompt. The selected object are scaled accordingly.If two points are entered at the first prompt and a number is entered at the second prompt then the number is the new length.

The number that's entered can be an integer or a real. It can be a whole number of a fractional number. For the SCALE command it's not important. The mentioned prompts are as they are used with AutoCAD 14. With AutoCAD 2000 the prompts are:

Select objects:
Specify base point:
Specify scale factor or [Reference]:

If the Reference option is chosen then the following prompts are:

Specify reference length <1>:
Specify new length:

The default value of the reference length is 1. That number doesn't change. I will always be one, no matter if other values have been entered.The SCALE command of AutoCAD 2000 works exactly the same as the SCALE command of AutoCAD 14. There are no changes to the command.

Jos van Doorn.is an AutoCAD specialist, AutoLISP programmer and editor of the
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He has written six AutoCAD books. Interested in the books. Let him know. Send
an e-mail to: mailto:josvandoorn@consultant.com

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Related Keywords:AutoCAD, scale command, CAD


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