Drawing units precision/tolerances

[mauarduz]

Hello Everyone,

I cannot find where to increase the tolerance for the units on the drawing,

I want to offset 3" 5/8 (3.625 inches), but when I do, I only get 3" 3/4 (3.75 inches), what am I doing wrong please?

Is this a matter of increasing the decimal tolerances for the drawing?

This is for a custom wall style I am trying to create where I've to insert components with 5/8 dimensions

Thanks!

[David_W_Koch · Accepted solution]

If you entered 3.625" as your Wall Component width, I would expect that AutoCAD has maintained that dimension "internally", but that your drawing file has its linear precision set to 1/4", so the displayed number gets rounded to the nearest quarter inch.

Check the linear precision setting in the Drawing Setup dialog, on the Units tab.  If you want to see numbers to the 1/8", you need to set the precision to at least 1/8". 

When working in imperial units, I usually have the length type set to Engineering (feet, inches and decimal inches), and the precision set to at least five decimal places, because I want to see it if a particular dimension is 0.120" or 0.130", rather than exactly 0.125".  Architectural units set to the "equivalent" 1/32" precision would show all three of those numbers as 1/8".  Maybe not a big deal for just one dimension (yes, I know that a tolerance of 1/4" in the field would be extraordinarily precise for the actual construction), but I prefer to have my drawings be as precise as possible so that I really know what I "should" have and then do my design to allow for field tolerances, rather than have the drawing itself be a hot mess before field tolerance comes into play.

[mauarduz]

Awesome, thanks so much! I feel the same way about the precision on the project.