Faulty measure dimensions tool results.

[UNKNOWN.DESIGN.LAB]

Hello Everyone, Wishing you well. 

I am having an issue that is interrupting my workflow! The measure dimensions tool is giving me faulty results. I am attaching a video of the behavior.

I suspect it could be the snap-to-point accuracy or something of the sort. Please advise as soon as possible if anyone has solutions. 

@maxim_k @pendean Any advise, guys? 

[maxim_k]

Hi @UNKNOWN.DESIGN.LAB ,

I think you should check whether your drawing is absolutely flat.

Go to Model tab and use 3DORBIT command to rotate view or set view to Left, Right, Front or Back.

[pendean]

@UNKNOWN.DESIGN.LAB Are you in a LAYOUT outside of a viewport? Or are you in modelspace? I think the latter, but you have way too many forced background colors so your osnaps may be clicking who knows where.

Which running osnaps do you have on?

What if you used DIST command instead of MEASUREGEOM?

I also don't see you trying to investigate the stair wall in your video to find out what your running OSNAPs are selecting: I would recommend you do that first. In modelspace. With as many layers frozen as possible so you only have the stair walls visible. And go rotate that UCS, and use ID command with deliberate OSNAP selections (instead of a default bucket of osnaps running) to narrow down the problem.

OR... you could just share the DWG file if you want. it would take les than a minute for @maxim_k to nail it for you 🙂

[UNKNOWN.DESIGN.LAB]

I have had a layered Topography block in the file from the start and this issue was not there. I tried orbiting to see if anything is off but was not able to spot problems. I have uploaded the DWG here for your reference and added mark to indicate an example inside, if you may help me with checking the file!

[UNKNOWN.DESIGN.LAB]

I tried your test and issue is present both in model space and a layout viewport in paper space. 

I tried your test and the issue is present with both MEASURE and DIST tools.

Could you clarify what forced background colours are? My Hatches? 

These are the OSNAPS i have on: 

 

Any ideas!?

[maxim_k · Accepted solution]

Hi @UNKNOWN.DESIGN.LAB ,

As I suspected - your drawing is not flat.

When you measure distance between two point with DIST or MEASUREGEOM command you get the real distance in 3D space, but when you use DIM command you get the distance between projection of the points to the XY plane of the current UCS:

I also attached your drawing with yellow triangle which demonstrates these distances.