v 2.5|Gstarsoft
DWG FastView's intuitive interface makes it easy to use even if you don't have the necessary technical skills. Drag and drop items across the main interface to open multiple drawings at once.
These are the key features:
DWG FastView lets you view 3D models, 2D vector objects and surfaces. It also allows for object information and attached drawings references. It includes many tools that allow you view and share your CAD such as layer control, object display and export and plotting functions.
This free CAD viewer app is lightweight and efficient. The interface is easy to use for all levels of expertise.