A screen measurement app for OS X that's quick and easy to use. Pixel Winch lets you select a region on the screen which is automatically magnified and centred on your display. Take measurements using any combination of the included tools. When finished, simply press escape to dismiss Pixel Winch. Tools include line and rectangles to draw measurable shapes, and grapples that automatically detect edges. Pixel Winch also keeps a history list of your past images and measurements that can be configured to be automatically deleted.