1- Free and easy to use;
2- More faster & more accurate for large DWG files;
3- Functions: Preview, Plot, Zoom, Pan, Full-screen view, Magnifier, Multiple Document Interface etc.,
4- Supported file format: R14~R2015 DWG, DXF;
5- About Magnifier function:
Magnifier is an innovative tool that not only helps to view drawing details or snap points without performing the traditional zoom in/out, pan or even regen commands on big drawings but also is ease of use and customize. You could do it or quit it by clicking the middle mouse button easily.