# 2D scaling?

**URL:** <https://discourse.shapr3d.com/t/2d-scaling/18150>\
**Category:** Modeling Questions\
**Created:** [March 19, 2022, 9:21pm UTC](https://discourse.shapr3d.com/t/2d-scaling/18150 "2022-03-19T21:21:51Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Ford](https://avatars.discourse-cdn.com/v4/letter/f/dbc845/32.png) [@Ford](https://discourse.shapr3d.com/u/Ford)\
**Post date:** [March 19, 2022, 9:21pm UTC](https://discourse.shapr3d.com/t/2d-scaling/18150/1 "2022-03-19T21:21:51Z")

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Newbie here.

Tried searching but didn’t find anything or didn’t know the correct search terms. I traced a part roughly from a photo that I can clean up after the fact, the problem I’m having is how do I adjust the size of the drawing based on a known dimension? I know the distance between mounting holes but how do I do it is the question?

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/b/b99b62f152a8fdb5d83f3f0333b6c1a45caf192b.jpeg)

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**Author:** ![SM1](https://avatars.discourse-cdn.com/v4/letter/s/9de0a6/32.png) [@SM1](https://discourse.shapr3d.com/u/SM1)\
**Post date:** [March 19, 2022, 10:53pm UTC](https://discourse.shapr3d.com/t/2d-scaling/18150/2 "2022-03-19T22:53:06Z")

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There might be easier or more accurate ways to do this, but here is one example of switching from cm to inches: [2-D Scaling - YouTube](https://youtu.be/uD1dz5t-ix4)

I recommend to scale the image to the correct dimensions before tracing from it.

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<div class="post-metadata">

**Author:** ![Ford](https://avatars.discourse-cdn.com/v4/letter/f/dbc845/32.png) [@Ford](https://discourse.shapr3d.com/u/Ford)\
**Post date:** [March 19, 2022, 11:47pm UTC](https://discourse.shapr3d.com/t/2d-scaling/18150/3 "2022-03-19T23:47:23Z")

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I scaled the drawing to fixed points like you said and redrew it. That was easier. Thank you.