iPhone 6 users: be sure to use standard display mode!
I had initially given this app only one star for inaccuracy. 1 inch would only measure as 7/8 of an inch. It turns out, that the display setting for my iPhone 6 was set on zoomed. After resetting to standard mode and rebooting iphone, the app work perfectly. It has a very nice interface and display. Of all the simple ruler apps, I now like this one the best.
VtWoodchuck about
Ruler®