It is very easy to locate the equipment you need for your smartscope. You should have done some research on different search engines. There are some links given below those will help you out in this regard. Go to the links below and order them to supply you a calibration glass. You can also contact some local laboratory to give you the equipment you need and you can also borrow it from them for some time. If you are interested to buy your own then contact these websites to provide you one.