# Length measurement from 3 pts

**URL:** <https://discourse.slicer.org/t/length-measurement-from-3-pts/32308>\
**Category:** Support\
**Created:** [October 18, 2023, 5:58pm UTC](https://discourse.slicer.org/t/length-measurement-from-3-pts/32308 "2023-10-18T17:58:31Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Deep\_Learning](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/deep_learning/32/15345_2.png) [@Deep\_Learning](https://discourse.slicer.org/u/Deep_Learning)\
**Post date:** [October 18, 2023, 5:58pm UTC](https://discourse.slicer.org/t/length-measurement-from-3-pts/32308/1 "2023-10-18T17:58:31Z")

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Is it possible to make a linear length measurement from 3 pts? First two points define the line and the third point defines the extent of the line. Length would be from the first to last point.

Not sure if this is possible with the current array of markups.

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**Author:** ![chir.set](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/chir.set/32/66982_2.png) [@chir.set](https://discourse.slicer.org/u/chir.set)\
**Post date:** [October 18, 2023, 9:00pm UTC](https://discourse.slicer.org/t/length-measurement-from-3-pts/32308/2 "2023-10-18T21:00:39Z")

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You may investigate if ‘[Stenosis measurement: 1D](https://github.com/vmtk/SlicerExtension-VMTK/blob/master/Docs/StenosisMeasurement1D.md)’ module in SlicerVMTK extension meets your expectations. It is designed for a specific context, but could fit other purposes.