eDrawings lets you see 2D and 3D drawings through the screen of your mobile device.
Functions:
Opens 3D (EASM, EPRT, SLDASM, SLDPRT) and 2D (EDRW, SLDDRW) files, supports cloud storage (Dropbox, SkyDrive, Google Drive and Hightail), and lets you zoom and rotate images and view them in full screen.
Controls:
The app is easy to use and supports several gestures (zoom, rotation) and multi-touch commands.