Stamp Grading Software - EzGrader - with stamp perforation measurement as well. By simply scanning in your stamp, EzGrader can determine the centering of your stamp and assign a grade to it such as F, VF, XF. AND it also measures the perforations of your stamp. Digital Stamp Grading Guide at it's best. EzGrader is a tool for any stamp collector who wishes to have a way to accurately grade the centering of their stamps, quickly and inexpensively, right in the comfort of your own home. EzGrader is the only software in the world to let you easily measure stamp perforations and stamp centering and grading from your own stamp images. The most intuitive and easy to use philatelic tool to ever come along. EzGrader is powerful and easy to use. By simply scanning in your stamp, EzGrader will be able to determine the centering of your stamp and assign a grade to it such as F, VF, XF and it can also measure the perforations of your stamp. Use it as a digital perforation gauge. Find that elusive perforation variety with EzGrader. EzGrader allows you to measure the centering of stamps before you buy from your favourite dealer or eBay. Be sure of what you are getting before you spend money on stamps that may be mis-graded. Get that bargain on stamps that have been under-graded. You can print out an eGrade certificate so you can have a hard copy of the results to keep for insurance purposes. Very handy when selling your stamps as well. Simply provide the purchaser with the certificate so they can see for themselves that when you say the stamp is XF , it's not just your opinion, but you have the proof as well.