Actually that’s not entirely true. It’s not really a new tool and it wasn’t made specifically for location survey work. The iPhone has become a ubiquitous item on film sets now. The number of apps created specifically for film work is over 50 with others being released monthly.
There have yet to be any released specifically for the Art Department but quite a number of them, including those designed for other occupations, are really useful to have.
Among these are the two apps, Photo Measures and My Measures And Dimensions. Both work very similarly and are great for recording and transmitting measurements of locations or of objects.
Basically they both work by either taking a picture with the phones camera or importing an image from the library. Them, dimensions are added, both linear and angular. Zooming in to the photo allows for accurate placement of arrows as well as allowing you to delineate small details. Notes can be added as well using a text tool.
As you can see, both applications are very similar, but one advantage of Photo Measure is, the basic application is free as compared to $2.99 for the basic My Measures. Photo Measures also has an enlargement window that makes it easier to precisely place dimension arrows. Give it a try and see if it’s useful for you. If you don’t own an iPhone, many apps also make versions for the Droid.