#2
sachinrawal,

In CAD we use drawing units to represent any unit we need and draw at full size.

1 drawing unit can represent 1mm or 1m or 1cm.

If you have a drawing where 1 drawing unit represents 1 metre, just scale the drawing up by 100 and the drawing in now in cm's or scale the drawing up by 1000 and the drawing is now in mm.


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Regards
John Finlay