exactly size material tiles

When applying a tiled material to a mesh/plane, how can I set a specific width/height for the tiles? (either in UE4 units, or pixel resolution, etc.)

Using TextureCoordinate node in the material editor only scales relative to the full size of the particular mesh, and using WorldLocationTexture does not allow for individual positioning AFAIK.

Exact scale seems like a very fundamental thing for artists to have for control.

Looks like the term I’m looking for here is Texel Density (TD), which is correlated with the UVs.