I had to really look hard to find anything this time, and came across an item that I think a few people may be interested in. I used this once, put it away and pretty much forgot all about it. It's not a necessity, but will come in handy to check your estimate. It sold for about $75 brand new and will work with Apple or Android phones once you download the Windoo app. Needs iOS 6.0 or Android 4.0 or better to work. Definitely small enough to carry on your person and is quite accurate. Non-direct