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I’m pretty new to blender and started with sketchup. I find overall that it is much more powerful software that is generally not as buggy - and can be used for many more things.

Still, I struggle with one tool in particular, the measure tool. When I want to measure from a vertex to vertex, I turn on snapping and can use the ctrl key to snap to the second vertex but for some reason I can’t do that with the first one. And so I zoom in very far to click on the first point then go all the way across the the other point. It is always wrong - really. So I zoom in even further to the first point and I see that it didn’t snap to this point. I mean, with ALL of the amazing capacities of blender this definitely surprises me.

I’m not expecting the great features of the measure from sketchup like resize the model by measuring a distance and rescaling it to that size - such as for a doorway or table height or other known quality, nor for the easy snap to x y or z direction. But am I missing something - is there a good snappable add-on I don’t know about?

I realize that blender is not a cad software, but I hope you understand that the measure tool seems super underdeveloped given the other aspects of blender that are now so sophisticated. Thanks for any clarity!

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    $\begingroup$ if you click and drag with measure tool, a line will be create and you can select one end of this line and snap it to a vertex. Then select the another end and snap it to another vertex. But, from what I understand, you say that this snap dont work in boths ends of the measure line? can you show me more details? gif or video to show what is happening? see this: gif $\endgroup$ – jailton_so May 13 '20 at 22:38
  • $\begingroup$ blender.stackexchange.com/questions/87243/… $\endgroup$ – Duarte Farrajota Ramos May 13 '20 at 23:36
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First point can't currently be snapped from the start.

It is a known limitation that is currently being looked at, it is part of a broader limitation that includes among other things not being able to set a base point for moving before transforming

Current recommended workaround is to eyeball the first point, precisely snap the second one, then return to the first one and move it while using snapping.

enter image description here

Edit

As of commit Gizmo Library: New Snap Gizmo from 27 May 2020, there is now a new generic special type of gizmo whose purpose among other things is providing snapping before use for various tools and operators in Blender, like base point snapping for transforms such as move or rotate, or snapping the first measure point of a ruler without having to backtrack

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  • $\begingroup$ Ok! Thank you. And this helps me significantly but does seem like a workaround too. I just didn't think that it could be possible that snap with ctrl was possible without the first vertex being an option. I also would like to suggest that they implement a rescale by measurement feature such as sketchup has. In this case if you measure a distance such as the 2m cube above, that shows in the data entry box at the bottom but you can instead make it any measurement - 1km or 1cm or anything. Very useful to resize the model or part. $\endgroup$ – Hector May 14 '20 at 1:59
  • $\begingroup$ @Hector You can suggest new functionality here blender.community/c/rightclickselect :) $\endgroup$ – Jachym Michal May 14 '20 at 11:06
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This is just a guess, but I wonder if you have duplicate vertices? Blender may be trying to snap to a different vertex than you want.

Try this...

In edit mode, select all (A). Then Merge vertices (Mesh>Merge>By Distance).

Watch the Status Bar at the bottom of the screen. It'll say "Removed x vertices".

This is very common until you get a feel for proper topology creation, and it's a function you'll want to be familiar with.

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