1. ## Understanding Scaling

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Dear Forum,

I'm new to using ACAD so please excuse me if my question seems to be simple. I would appreciate if someone can explain to me the following excerpt that I got from one of the ebook tutorials that I read.

2. I believe that is the old school method of creating everything in model space then scaling it all down to fit on the size of paper you intend on using when it comes time to print. BTW...it should read 11"x17" not 11'x17'. BIG difference!

Will the method work? Yes. Is it the recommended method? Not necessarily. Since the introduction of paper space layout and their respective viewports the process, in my opinion, has gotten easier. The only question remains whether or not to put dimensions and text in model space or in the layout. My preference is to put both in the layout but is not to say it is the only method. Text and dimensions can be placed in model space if one utilizes a feature called annotative scaling.

Will you be working in imperial or metric units?

What book was that taken from? It sounds familiar.

3. If you decide on which units you will be working with, and strike out the references to the units you will not be working with, it all might make more sense.

4. I myself would just set up my paper space for a 11"X17" create a viewport and set the scale at 1/4" and see if it fits if your working in imperial units do the same thing if you using metric.

5. Now that I have had a chance to reread that excerpt from the ebook tutorial I would recommend buying a good after-market AutoCAD book written by an acknowledged author and forget about using the ebook.

Grab a sheet of 11"x17" paper then go get yourself an architect's scale. Find the edge marked 1/4 at one end and 1/8 at the other. Now measure the length and width of the paper using the 1/4 scale. You'll find that at 1/4"=1'-0" scale 11" is equal to 44' (feet) while 17" is equal to 68' (feet). No way in hell do the measurements come anywhere close to being equivalent to 528 feet x 816 feet as the author states. Another way of looking at that particular scale is if 1/4" = 1 foot then 1" = 4 feet. 11x4=44 and 17x4=68.

A sheet of paper measuring 8.5"x11" would, at 1/4"=1'-0", be equivalent in size to 34'x44'.

A sheet of paper measuring 24"x36" would, at 1/4"=1'-0", be equivalent in size to 96'x144'.

If you switch to a smaller scale such as 1/8"=1'-0" (1"=8') the above equivalent sizes would double. And if you went with a larger scale such as 1/2"=1'-0" (1"=2') the above equivalent sizes would be half of what is shown. Understand?

Should architectural drawings be your main interest then go out and buy a cheap plastic architect's scale at Home Depot or Staples. It will cost you between \$4 and \$10. Then learn how to use it.

Last thing. If you decide to follow the advice to use layouts your title block / border, along with one or more viewports, will be located in the layout while all of your geometry will be located back in model space. Think of the viewports in your layout as windows that allow you to see the objects that you have created back in model space.

6. The author got his feet and inches ticks wrong which should clue you in to how much this guy really knows. 528/44=12 and 816/68=12 so the guy was right about his math but he got his feet and inches mixed up.

7. I am so glad were metric.

8. Originally Posted by BIGAL
I am so glad were metric.
Me too, and I grew up with Imperial, a massive pain in the butt!

9. I started Surveying in the US Army (NATO) with meters and 6400 mils in a circle but had to switch to decimal feet for most things except Imperial for structures and Degrees-Minutes-Seconds for angles. Metric was way easier, but with software doing all the work now it's no real difference anymore.

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Originally Posted by BIGAL
I am so glad were metric.
Metric is a conspiracy by the big corporate companies to make me buy new tools to fit their nuts and bolts and what not. I don't care if you tell me how long a centimeter is all you will get back from me is a long stupid stare... no wait those are what I give my wife when she explains to me why we have to buy a \$500 vacuum.