# VTK.JS (Painting and erasing tool radius size)

**URL:** https://discourse.vtk.org/t/vtk-js-painting-and-erasing-tool-radius-size/16007
**Category:** Support
**Tags:** code, vtkjs
**Created:** [September 1, 2025, 5:31am UTC](https://discourse.vtk.org/t/vtk-js-painting-and-erasing-tool-radius-size/16007 "2025-09-01T05:31:22Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![selimcanozgur](https://discourse.vtk.org/user_avatar/discourse.vtk.org/selimcanozgur/32/10205_2.png) [@selimcanozgur](https://discourse.vtk.org/u/selimcanozgur)
#### Post date: [September 1, 2025, 5:31am UTC](https://discourse.vtk.org/t/vtk-js-painting-and-erasing-tool-radius-size/16007/1 "2025-09-01T05:31:22Z")

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I have painting and erasing tools, and their radius sizes appear differently on the coronal screen and on the sagittal screen and on the axial screen. Is there a way to show them at the same size on all screens? And is this the right way to do it?

 ![image](https://discourse.vtk.org/uploads/default/original/2X/7/733f84b8f53600ffb1941e1fe87c6caaf57b3ef3.png)

 ![image](https://discourse.vtk.org/uploads/default/original/2X/c/c387a682c5757205830d307ba587a8862c98265c.png)

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### Author: ![finetjul](https://discourse.vtk.org/user_avatar/discourse.vtk.org/finetjul/32/154_2.png) [@finetjul](https://discourse.vtk.org/u/finetjul)
#### Post date: [September 1, 2025, 10:28am UTC](https://discourse.vtk.org/t/vtk-js-painting-and-erasing-tool-radius-size/16007/2 "2025-09-01T10:28:00Z")

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By default, size is defined in world coordinates.  
Did you try to set “scaleInPixels” to true ?