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CAD tip CAD tip # 853:

Question CAD 
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Q - question

How to dimension arc length?

A - answer AutoCAD can dimension only arc angle, not length. You can use a short LISP utility - DIMARC, which works the same as angular dimension but displays length of the arc. DIMARC can be downloaded from

For an associative dimension you can use the LiveLabel utility.

Since AutoCAD 2006 you can use the internal DIMARC dimensioning command.

100% *  CAD 
8.1.2001    34996×   FAQ  
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applies to: AutoCAD · AutoCAD 2006 ·

See also:
Tip 2219:How to make an associative dimension of object's color, lineweight or Z-coordinate?
Tip 2021:How to make an associative dimension of polyline length?

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