Precise STL File Resizing

I have several existing STL models that need to be resized to match exact, specified measurements. All other geometry should remain untouched; this is purely a scale-to-spec task. Once we agree on the... (Budget: $2 - $8 USD, Jobs: 3D CAD, 3D Design, 3D Modelling, 3D Printing, 3D Rendering, AutoCAD, CAD/CAM, Solidworks)