# Align Loaded Object (.stl) with Needle

**URL:** <https://discourse.slicer.org/t/align-loaded-object-stl-with-needle/21560>\
**Category:** Support\
**Created:** [January 21, 2022, 2:05pm UTC](https://discourse.slicer.org/t/align-loaded-object-stl-with-needle/21560 "2022-01-21T14:05:32Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Srijeet\_Chatterjee](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/srijeet_chatterjee/32/12027_2.png) [@Srijeet\_Chatterjee](https://discourse.slicer.org/u/Srijeet_Chatterjee)\
**Post date:** [January 21, 2022, 2:05pm UTC](https://discourse.slicer.org/t/align-loaded-object-stl-with-needle/21560/1 "2022-01-21T14:05:32Z")

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Hello everyone,

Currently I am trying to load an stl file and show a positions of a probe using a tracking device (using Plus Server). The needle provided by OpenIGTLinkIF seems to be 90° apart from the model I am loading. Would be great if anyone can provide some advice on how to fix this issue. Thank you 🙂

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/0/e/0ef30d4c92614d58bbe68caad0f4802c7601375c.png)

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/e/0/e04a7b1ff8c6a0538420dc0ae3766bf9ab4f984a.png)

Best regards,  
Srijeet

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<div class="post-metadata">

**Author:** ![Srijeet\_Chatterjee](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/srijeet_chatterjee/32/12027_2.png) [@Srijeet\_Chatterjee](https://discourse.slicer.org/u/Srijeet_Chatterjee)\
**Post date:** [January 24, 2022, 12:47pm UTC](https://discourse.slicer.org/t/align-loaded-object-stl-with-needle/21560/2 "2022-01-24T12:47:03Z")

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The problem was really simple. But just in case someone faces similar issues, transforming the Obj file in the correct orientation using meshlab would solve the issue.