Accurately Grade and Measure Stamp Perforations The Stamp Analyser digitally measures the stamp perforations, the stamp frame and the balance among the four margins to determine the centering grade of the stamp. It also allows you to measure the distance between any two points on a scanned or photographed image. The Stamp Analyser provides this information based on accurate measurement; no more guesswork. All you need to do is to provide a good scan or a good photograph (IOS version) of the stamp and the Stamp Analyser does the rest. Optionally, you can add the stamp Soundness and Eye Appeal components to obtain the final grade. The Soundness and Eye Appeal components are based on the PSE Grading Guide. The Stamp Analyser user interface has been designed to be intuitive and simple. On the Mac, you simply drag and drop your stamp image into the Stamp Analyser. On the iPad and iPhone, you can either take a photo of the stamp or select it from the photo library. More screenshots​ at rakium.com.