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CAD tip CAD tip # 7878:

Question CAD 
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Q - question

How to input a real fraction in AutoCAD?

A - answer I am trying to input the offset distance as 17.3 and the drawing is in 1:2 scale, so I entered "17.3/2", but it doesn't work.

On AutoCAD prompts, you can directly input arithmetic expressions with integers (e.g. 17/3), but for operations on real numbers you need to use the embedded CALculator:

Offset distance: 'cal
>>>> Expression: 17.3/2
Continuing the OFFSET command.

Another option is to use the LISP evaluator:

Offset distance: (/ 17.3 2)

And another option is to use the QuickCalc - Ctrl+8.

100% *  CAD 
30.3.2011    20445×  
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applies to: AutoCAD ·

See also:
Tip 13583:Evaluate math expressions in AutoCAD DWG texts.
Tip 12777:Arithmetic and trigonometric functions available in Revit expressions.
Tip 12624:How to enter dimensions in Revit using other units?
Tip 12002:Arithmetic expressions with measured distances in AutoCAD.
Tip 11994:How to scale a 3D model to a given size in Fusion 360?

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