# Cannot snap to 1 cm

**URL:** <https://forums.sketchup.com/t/cannot-snap-to-1-cm/31404>\
**Category:** SketchUp\
**Tags:** sketchup\
**Created:** [September 27, 2016, 2:35pm UTC](https://forums.sketchup.com/t/cannot-snap-to-1-cm/31404 "2016-09-27T14:35:20Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Johan1974](https://avatars.discourse-cdn.com/v4/letter/j/8491ac/32.png) [@Johan1974](https://forums.sketchup.com/u/Johan1974)\
**Post date:** [September 27, 2016, 2:35pm UTC](https://forums.sketchup.com/t/cannot-snap-to-1-cm/31404/1 "2016-09-27T14:35:20Z")

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Hello,

If i use the ruler the minimal size i can use is 2 cm. How can i set 1cm from a border?

Thanks!

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**Author:** ![DaveR](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/daver/32/7601_2.png) [@DaveR](https://forums.sketchup.com/u/DaveR)\
**Post date:** [September 27, 2016, 2:39pm UTC](https://forums.sketchup.com/t/cannot-snap-to-1-cm/31404/2 "2016-09-27T14:39:17Z")

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Please give more information. Or better, provide an example file that shows what you are trying to do.

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**Author:** ![Geo](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/geo/32/82_2.png) [@Geo](https://forums.sketchup.com/u/Geo)\
**Post date:** [September 27, 2016, 3:23pm UTC](https://forums.sketchup.com/t/cannot-snap-to-1-cm/31404/3 "2016-09-27T15:23:11Z")

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> [@Johan1974](#):
>
> How can i set 1cm from a border?

**1)**  **_Disable_** Length Snapping at **Window** \> **Model Info** \> **Units**  
 ![](https://global.discourse-cdn.com/sketchup/original/3X/5/b/5b63a4530987494e084e802265c1680d490d51ef.png)

**2)** See this Help article: **[Measuring Angles and Distances to Model Precisely](http://help.sketchup.com/en/article/3000099)**

**3)** Watch these video tutorials:

https://www.youtube.com/embed/iQEACzA2fDk?feature=oembed&wmode=opaque&list=PL190C90DCE62242C9

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https://www.youtube.com/embed/pRJTBgzxZ9Y?feature=oembed&wmode=opaque&list=PL190C90DCE62242C9

* * *

[![](https://global.discourse-cdn.com/sketchup/original/3X/9/7/97593042ead74b1aa85190a7ffd06be28468e37b.jpeg "SketchUp: Injecting accuracy into your model") ](https://www.youtube.com/watch?v=k_H4MxF7e-Q)

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<div class="post-metadata">

**Author:** ![Johan1974](https://avatars.discourse-cdn.com/v4/letter/j/8491ac/32.png) [@Johan1974](https://forums.sketchup.com/u/Johan1974)\
**Post date:** [September 27, 2016, 4:48pm UTC](https://forums.sketchup.com/t/cannot-snap-to-1-cm/31404/4 "2016-09-27T16:48:54Z")

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Thanks for the info, for sure i am going to to take a look at the tutorials you suggested.

I found the problem, i chose the template in meters while there is also one in mm. Now i can sketch more exact. 🙂

Is it possible to switch an exisiting sketch from meters to mm so i do not have to start over ?

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<div class="post-metadata">

**Author:** ![DaveR](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/daver/32/7601_2.png) [@DaveR](https://forums.sketchup.com/u/DaveR)\
**Post date:** [September 27, 2016, 4:50pm UTC](https://forums.sketchup.com/t/cannot-snap-to-1-cm/31404/5 "2016-09-27T16:50:48Z")

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> [@Johan1974](#):
>
> Is it possible to switch an exisiting sketch from meters to mm so i do not have to start over ?

Yes. Go to Window\>Model Info\>Units and set them as desired.

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**Author:** ![Cotty](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/cotty/32/251290_2.png) [@Cotty](https://forums.sketchup.com/u/Cotty)\
**Post date:** [September 27, 2016, 4:53pm UTC](https://forums.sketchup.com/t/cannot-snap-to-1-cm/31404/6 "2016-09-27T16:53:31Z")

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> [@Johan1974](#):
>
> Is it possible to switch an exisiting sketch from meters to mm so i do not have to start over ?

You should model with a 1:1 scale (except for very small objects), so the unit doesn’t play a role/ change the model …