2D Packaging Layout Integration

I have three separate DWG layouts for a manufacturing-sector packaging line that now need to live in a single, coherent plan. Your first task is to merge those files, keeping everything perfectly aligned and to scale... (Budget: £250 - £750 GBP, Jobs: 2D Drafting, 2D Layout, AutoCAD, CAD / SolidWorks, CAD/CAM, Corporate Identity, Drafting, Graphic Design)