I need help scaling my drawing

Hello everyone!

I have some problems with scaling my drawings. I'm using AutoCAD 2007. I found a plan scale 1:500 in a magazine and i need to draw it but there's no dimensions, therefore i just inserted the plan by selecting 'raster image reference' and I did not change any settings before i drawn it.

So now i want to draw these drawing with dimension and change it to scale 1:200. Can anyone help me to solve this problems?

Thank you so much =)

Rather difficult even if in the magazine is no dimensions.

Because it can be used as a benchmark to reset your image with a scale of 1: 200.

Or anyone who can help him ?

Perhaps the next comment could...

Welcome in the forum, Chen!

You have the drawing at scale 1:500 and you would like it at 1:200, right?

Scale it up with scale 500 to make it "true dimensional". Use a viewport scaled 1:200.

I adjusted the title of this thread. If you will give relevant names to the threads you start, automatically you get help even before someone answers you; just check the "Similar Threads" at the bottom of the page.

Your image came into autocad at a particular size.

What were the overall dimensions of the scan? 8 inches by 11 inches?

When you bring it into autocad it usually is set a one inch for the horizontal dimension.

Scale it by 500. Trace it and you have a 1:500 drawing.

Do you have that magazine hard-copy? In this case will have to measure one part of the sketch on paper and measure it again in AutoCAD to figure out the scaling resulted from scanning and AutoCAD import. May be better to do the same procedure for more than one part (vertical and horizontal) to get an average factor, that it to take care of distortions from printing/scanning.

Example:

19.3mm on paper means that there are (19.3 * 500)mm on the real object – if you will get 6.57 units in AutoCAD this will require a (19.3 / 6.57) x 500 scaling factor to get the 1:1 sketch.

Regards,