This is a really cool feature that you cannot even do on the desktop versions of AutoCAD: quick measurements. Just start the tool, then tap in any open space and AutoCAD mobile gives you the horizontal and vertical distances to the nearest geometry. Really great for space planning and checking dimensions on-site. In the desktop app, one measurement between two walls is at least 3 clicks, then another 2 for every new dimension. AutoCAD mobile gives you 2 measurements in just 2 taps, and you can even drag your finger through the spaces for running / live dimensions. Really handy stuff.
Check out the video on the AutoCAD blog.
Also, if you want more tutorials on AutoCAD mobile, check out the YouTube channel here with a series of tips and tools, masterfully narrated / demonstrated I might add. 😉