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CAD tip CAD tip # 5883:

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Q - question

How to measure distance along a curve?

A - answer To measure the distance between two points (point and startpoint) measured along a given curve (polyline, arc, spline...) you can use the free LISP utility - CADstudio LGC (command LGC).

The LGC2 command allows to select a curve (near one of its endpoints) and then it measures the distance of picked points on the curve to the selected endpoint of the curve.

The LGC3 command inserts label blocks (stations) at the picked points (you can also use the "Vertices" option to choose all vertices automatically). The "Relative" option will label releative distance from previous marked point. You can then extract their attributes or schedule them to a table.

You can download the LGC utility from

For advanced dimensioning of lengths and distances along curves, use the newer utilities TraceCurve and DimCurve (see Download and Tips).

100% *  CAD 
4.12.2007    35022×  
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applies to: AutoCAD ·

See also:
Tip 11428:Differences in typed distance/offset values in Inventor sketches.
Tip 11222:Directional copying of AutoCAD drawing objects.
Tip 10717:How to change focal length in the A360 Mobile viewer.
Tip 10682:Automatic classification of drawing objects by their properties.
Tip 10165:Changing the orbit mode inside the 3DORBIT command.

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In the dynamic drawing mode, entered coordinates are considered "relative". « | » How to change weld material in Inventor weldings?

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