During mesh edit, I'm trying to add a cylinder that has a 0.125" radius. Seems straightforward enough. But I'm finding that the dimensions look completely wrong. See screenshots of 0.5", 0.25", and 0.125" radius cylinders below (viewed on-end). The grid pattern is 1" squares.

the size doesn't look right. What is going on here. If I draw a line approx 1/8 of the distance from the center of the cylinder to the first line, I would expect it to be near the size of the 3D cursor. But it's much bigger. What is going on here, how do I fix this?

I'm setting the size in the "add cylinder" dialog. It reads, for example, "0' 125 thou"

The view is directly down the Z axis, with an orthographic projection.

0.5 inch radius

0.25" radius

0.125" radius

UPDATE: Added units settings screenshots

Scene Units settings

layout text info display, showing grid lines are inches

Blender v2.91.2, Windows 10, fresh install

  • $\begingroup$ What is your unit scale set to in the scene properties? $\endgroup$
    – Psyonic
    Commented Feb 4, 2021 at 6:44
  • $\begingroup$ @Psyonicl: I updated the question with screenshots to answer your question. $\endgroup$
    – rothloup
    Commented Feb 4, 2021 at 13:46

1 Answer 1


Turns out this was caused by a "solidify" modifier that I had on the object I was editing. Applying the modifier or deleting it before adding the cylinder solved the problem.


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