Topic: How Precise is CAD?

[Bakerman]

Here is a pretty good explanation of AutoCAD's accuracy:


http://www.drack.info/wpsmoke/accuracy/accuracy.html

[JohnK]

> How Precise is CAD?

* Se7en raises hand excitedly: Oh,O, 32?!

[Bob Wahr]

Now I have to take issue with one thing posted earlier, because it is true only to a point .. this is merely to clarify the issue ... If your drawing units are inches (most common architectural work) and you draw a 400 mile square, that isn't 400 units ... that is 400*5280*12 or 25344000 units .... this is why some people (namely architypes and surveyors) have issue with using one anothers drawings ... scale up the drawing by 12 .. scale down the drawing by 12 .. adnauseum

International feet or US Survey feet?

[Greg B]

Now I have to take issue with one thing posted earlier, because it is true only to a point .. this is merely to clarify the issue ... If your drawing units are inches (most common architectural work) and you draw a 400 mile square, that isn't 400 units ... that is 400*5280*12 or 25344000 units .... this is why some people (namely architypes and surveyors) have issue with using one anothers drawings ... scale up the drawing by 12 .. scale down the drawing by 12 .. adnauseum

International feet or US Survey feet?

One has sandals the other has blisters?