When I select the Check mark to inspect my mesh, sometimes it describes the mesh as “open polygon mesh” and sometimes as “ open double precision polygon mesh”….Can someone explain the difference?

open the mesh has naked edges double precision the coordinates are stored with “double” values, 64 bit each otherwise the precision is less - 32 bit per number mesh … the object typ

Mesh designation

Rhino Rhino for Windows

scottd (Scott Davidson) December 12, 2025, 4:40pm 3

Here is more discussion on mesh precision and how they relate to eachother: Mesh Vertices Precision Weirdness - #7 by DanielPiker

Topic		Replies	Views
Is Mesh still single precision? Rhino Developer	7	1212	April 15, 2020
OpenNurbs mesh vertices openNURBS windows	1	483	December 20, 2021
Double precision vs single precision on mesh import Rhino for Windows	2	2674	June 8, 2015
Python + rhinocommon: Creating a double-precision mesh Scripting windows , rhinocommon , ironpython , rhino7	3	292	March 19, 2024
[RhinoCommon] double precision mesh vertices Rhino Developer doubleprecision , mesh	2	1635	December 18, 2018

Mesh designation

Related topics