# Calibrating Reference Image

**URL:** <https://discourse.shapr3d.com/t/calibrating-reference-image/32053>\
**Category:** Feature requests\
**Created:** [May 21, 2024, 2:46pm UTC](https://discourse.shapr3d.com/t/calibrating-reference-image/32053 "2024-05-21T14:46:39Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![PEC](https://avatars.discourse-cdn.com/v4/letter/p/67e7ee/32.png) [@PEC](https://discourse.shapr3d.com/u/PEC)\
**Post date:** [May 21, 2024, 8:38pm UTC](https://discourse.shapr3d.com/t/calibrating-reference-image/32053/4 "2024-05-21T20:38:31Z")

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Hi

You can move the scale gizmo and the position of the gizmo becomes the central point of the rescaling. This is present for a long time in Shapr.

> [@Import a photo and scale it perfectly?](https://discourse.shapr3d.com/t/import-a-photo-and-scale-it-perfectly/15972/2):
>
> Draw a (possibly temporary) line in Shapr3D in the same plane as the photo – “top view”, etc. Set the line to a convenient size, i.e 12" if that is the length of your reference ruler. Move the photo until one end of the ruler is under one end of the line. Using the scale tool (on the photo), move the “anchor point” to where the line and the reference point match, then simply increase or decrease the photo size until the other end lines up with the line you drew. There are several excellent vi…

If you look at the video pointed in the post, go around minute 8:00  
Hope it helps.

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