is it possible to somehow determine in which units of measurement the model is located? Millimeters, centimeters, meters or inches?

[3dportable]

is it possible to somehow determine in which units of measurement the model is located? Millimeters, centimeters, meters or inches?

[javagl]

The easiest way to determine this is via https://registry.khronos.org/glTF/specs/2.0/glTF-2.0.html#coordinate-system-and-units :

The units for all linear distances are meters.

Yes, creators of models can do whatever they want. (Even in the official sample models, there are some models that do not have a "reasonable" size in terms of their bounding box - see this issue for some examples). But one purpose of putting this information into the specification is that users generally should be able to rely on that, and do not have to deal with something like "asset": { "units": "nauticMiles" } } or so...

EDIT: Specifying the units helps to make ... 3D portable 👀