Measure units are millimeters, the petals thickness is about 2.8 mm in diameter.Petal thickness is about 1mm.
Mesh is manifold, no holes, no inverted faces, no bad contiguous edges.
Available formats: .blend, .stl, .obj, .fbx, .glb
Two version of the flower is here:One has solid, filled in, central part another one has empty central part.