Image Meter a great app to measure length, height, and angle on the image. It provides tools that help you measure lengths, angles, and areas in your photos. Instead of drawing sketches by hand, simply take a photo from your smartphone or tablet and annotate it with the dimensions. It has easy support for Bluetooth laser distance measurement devices. Also, it enables you to measure within the image once you calibrated it with a reference object of known size. This app enables you to measure the missing data directly from the photos, afterward. Additionally, you can also easily measure the dimensions of places that are too difficult to reach. The only thing you will need to do this is some kind of reference object to calibrate to absolute size. you can also easily measure the dimensions for places that are too difficult to reach or hard to measure for other reasons. Also, it can take care of all perspective foreshortening and can still compute the measurements correctly. Some of the features of the Pro version are, it measures lengths, angles, circles, and arbitrarily shaped areas based on a single reference measure. The Bluetooth connectivity to laser distance meters for measuring lengths, areas, and angles are available. Also, metric and imperial units (decimal and fractional inches) are available. You can easily add text notes, freehand drawing, draw basic geometric shapes, Easily you can export to PDF, JPEG and PNG. It adjusts brightness, contrast, and saturation for better readability of your annotations. You can draw sketches on empty canvases. This app will take care of all perspective foreshortening and will still compute the measurements correctly. This app is useful for civil engineers, Architects, and Interior designers. Download the free APK file of this mobile app.