mesh in gazebo with a wrong scale

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Hi guys, i have a question, i have a .stl file from solid edge, and the model is with meter (millimeter), when i import this model to the gazebo, i set up the scale with 0.001, 0.001, 0.001, but it's too small... and if i set it up with 0.005, 0.005, 0.005 .It's seems also wrong, and i am sure that the unit in gazebo is meter, and the unit of the mesh from the solid edge is also meter(millimeter) , where am i wrong? Thanks a lot