SoftSheet Device Concept by Gautham R Varma provides you with all the best comfort in this regard. Take the CAD/PDF format of your construction drawings in your pendrive or even store it with your phone. While you are in the site, just plug the actual pendrive onto SoftSheet (transfer the files through bluetooth throughout case of phone) and also there you go, your drawing is projected on a transparent sheet, which is foldable and touch sensitive. Zoom in and out wherever you want inside drawing using your fingertips. The file title is displayed at the bottom, on the holder. After the particular inspection is done, just detach the idea from the holder, fold it again and keep that back inside. SoftSheet device is actually mainly targeting architects, engineers, contractors as well as site workers as well.