I'm a blender n00b and this may be a wrong tool for the job, but I've found some great features in Blender (like the caliper add on), so I'm pretty sure there's a way to easily (or at least bit easier) select two surface points of a loaded 3D .ply model somehow instead of moving the caliper/ruler points and its x y z axis individually one at a time?

Is there such a tool in Blender (or anything standalone) for selecting points from a surface of a loaded 3D model and measuring the distance of those selected points please?

Any explanation for how to do it any faster in Blender, instead of moving x y z axis of caliper (or ruler/protractor tool) one at a time attempting to align them to a surface of a loaded 3D model, or in any other tool that's able to measure that would be greatly helpful and appreciated. TIA


My favorite tool for measuring things is the measureit addon.

Once the addon is installed and enabled, simply enable Show in 3D view > Tool Shelf (T) > Measureit tab. Then select the vertices you want to measure and click Segment. You can edit and delete individual measurements in the Properties Region (N):

enter image description here

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    $\begingroup$ it can be downloaded here: github.com/Antonioya/blender/tree/master/measureit $\endgroup$ – user1853 Nov 16 '15 at 6:41
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    $\begingroup$ @cegaton I just went to get the link, only to be distracted by a notification for this comment :P $\endgroup$ – gandalf3 Nov 16 '15 at 6:42
  • $\begingroup$ Thank you four answers both, the only trouble I have is that my mash has a really large number of vertices (about 230k, 440k faces, etc.) so in edit mode it's really slow to select two vertices among so many...is there such a thing in Blender that can reduce vertices but estimate the loss in precision of remaining points, or do it somehow without loss, that'd be great. TIA $\endgroup$ – IV1 Nov 28 '15 at 18:53

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