Scale Question

[LBUG42]

Here Is Something That Will Be Simple To Answer But Im Confused On How To Change Scale When You Have Imported A Drawing In Scale 1:2 How To Make It The Right Scale It Is Too Large. Im Not Sure If That Is The Right Scale But I Have Tried To Rescale It But It Is Not Correct. If Someone Can Advise Me On How To Figure It Out I Would Appreciate It.

[LBUG42]

Oh I Should Also Mention That The Original Drawing Was In Mm, 14 Is The Size

[ReMark]

Well we know what the dimension reads (14"). And we know what you want it to measure (.551"). When you did the math what did you arrive at for the scale factor?

 

Just out of curiousity, when you measure between the two points what does AutoCAD return as the distance?

[ReMark]

mm? Really? Then why is the dimension shown called out in feet and inches?

[LBUG42]

Oh Sorry I Change Units So I Could Understand.

[ReMark]

So what units are we working with?

 

You have yet to answer the two questions I put to you previously in this thread. Care to answer?

[LBUG42]

Well It Is 14mm In Original Drawing And Scale 1:2 Is What Was Written For Scale Factor On The Drawing I Have, I Opened The File In Inventor And Exported As A .sat File Then Imported To Cad But There Was Nowhere That It Asked Me To Scale. The Original File Was A .stp File So Im Trying To Get It To Cad So I Can Work With It.

[ReMark]

In model space, when you measure the distance between the two holes what distance does AutoCAD return?

[LBUG42]

1' 2" Is What I Get When It Should Be .551"

[ReMark]

I see we've changed units somehow.

 

Divide 0.551 by 14. The answer is 0.0393571428. That's your scale factor. After scaling the object the distance should measure 0.551.

[LBUG42]

Thank You, Now I Understand How To Get It

[ReMark]

LBUG42:

 

You're entirely welcomed.

 

You made this more complicated than it had to be by mixing Imperial (U.S.) and Metric units into the discussion when it appears there was no need to. It might have been different had you recieved the drawing in Imperial units and wanted to convert it to Metric units and rescale it at the same time (or vice versa).

 

BTW, it is not necessary to capitalize the first letter of every word Like You Did In Your Previous Posts. OK?

[Coosbaylumber]

I see we've changed units somehow.

 

Divide 0.551 by 14. The answer is 0.0393571428. That's your scale factor. After scaling the object the distance should measure 0.551.

 

 

 

I think that is the OLD way.

 

It works, but is now is simplier to measure and say "From here to here, is exactly ___ units (write it down), and ought to be ____units."

 

Thus after SCALE, type in (one order or the other) 33334/23598 and it will automatically divide and convert the blocked off area same as entering a scale factor. This will cause the blocked off figure to grow or get smalleer.

 

But, cannot add in any decimal points in to the equasion, as one side is simple, you MUST add in zeros to make up for the inaccuracy. Thus 29.4 may become 294000

 

Use the routine about once every second day and still works in my version.

 

 

Wm.

[ReMark]

Always nice to have a second option right?

 

Since I have my calculator open all the time I find it just as easy to "do the math".

[Coosbaylumber]

I think Mark is correct.....

 

I had a version in like early 2000's that did not understand what the divisor / mark was all about. Used it for years prior to, but got off on the installation in one version. Later on in some version (at another firm) it worked once again. Seems to work OK in version 2008 here.

 

But instead of hand calculator, I use the one that MS included on each computer. Then min, or eliminate it when done.

 

Wm.

[chelsea1307]

if were going for other options without the math, you could also draw a line the .551 that you want starting at one measuring point and scale reference and pick the first spot (where your line is drawn from) then your second spot (the distance that is too small or short) then the other end of your line

[Coosbaylumber]

Chelsea....

 

I do not like to measure things here for fear of some miss as to an unintended measurement. Let us say after measuring the center to center distance we find it now is 551.00002 units or 2.50002 units, we made the error, it is not Exact, but very close.

 

Thus, if the distance between centers on example given is .551 units (measured), and I want it to be 2.5 units then I would SCALE

 

(About your chosen point)

 

a ratio of 2500/551 units. You amy not see the increase, but is there. Measure it and see.

 

Thus zero decimals, and one side of divisor got increased an appropriate amount to get the results to new units. If the scale ratio was off, reverse the numbers at the divisor, or drop off one zero from increased number.

 

Not all versions of Acad understand this older concept. It may be due to whoever loaded it up, but found once in early 2002 or 2003 that the version flat went on before I had a chance to insert all numbers.

 

Wm.