Help with setting option for 1"-30' viewport scale

[mid-awe]

Hi all,

I need a little help calculation a viewport scale of 1"=30'.

I've looked around and only find nearly what I looking for. For 1"=20' I have a value of 0.004167 Paper Units = 1 Drawing Units, but what is the formula to clculate 1/30"=1'-0"?

Thank you.

[Kent1Cooper · Accepted solution]

---

@mid-awe wrote:

.... For 1"=20' I have a value of 0.004167 Paper Units = 1 Drawing Units, but what is the formula to clculate 1/30"=1'-0"?

....

---

1/360 [just as that decimal number is 1/240 -- there are 360 inches in 30', or if you prefer, there are 360 thirtieths of an inch in a foot].  If you select a Viewport outline, in the Properties box "Custom scale" slot you can type it in just that way, as a fraction, which will be precise, unlike typing in a number to some number of rounded decimal places.  It will very likely "read" there as 0" afterwards, depending on your Units display settings, but don't let that throw you -- it will operate correctly.

[mid-awe]

Thank you Kent. We've recently had conversations about this in the office and I needed to provide a definitive answer.

BTW- it was news to everyone that we could simply enter a fraction. Thank you for the awesome tip. 🙂

[Kent1Cooper]

---

@mid-awe wrote:
Thank you Kent. ....

BTW- it was news to everyone that we could simply enter a fraction. Thank you for the awesome tip. 🙂

---

You're welcome.  And you can enter a fraction, including a number plus@ a fraction with a hyphen separator, just about any place it's looking for a number or a distance -- as an Offset distance, as a coordinate in a Move or Copy displacement, even combined with other formats [e.g. @3-2/3,4.25,0], as a Text height, as a rotation angle, as a scale factor, etc., etc.  A little further discussion is available here, and I'm sure elsewhere.

[gccdaemon]

Here are a few registry entries for custom scale lists, not sure what version of CAD you're on though. Rename to .REG and double click to add them to the registry.

[mid-awe]

Thank you Andrew. That is great.

I'm on 2013.

[gccdaemon]

These will stay put when you reset the scale list as well. Enjoy!

[mid-awe]

This reminds me of the way that Blender works. You can actually type in the math, such as: 1" / 360

Thanks again.