You should be able to see the drawing in this page, only if AutoDWG Active-X was installed, it enables IE functionality of viewing DWG/DXF files on line. Please download and install it from here.
Download and install DWGViewX
Please open this site with IE or Microsoft Edge IE mode, then you will view the sample drawing directly
DWGViewX control only works with IE directly, to work with Microsoft Edge, please choose "Reload in Internet Explore Mode".
How to configure easy access to Internet Explorer mode?
Help for Developers...
Or, you can load a local drawing (.dwg/.dxf) to view: