Sandpaper vs atomic force microscope

I'm really excited to use this microscope for future projects and I want to thank icspi for lending it to us: https://www.icspicorp.com This atomic force microscope is really cool because it lets you see the texture of samples on the nano-scale. So what we want to try to test, is to see if 7000 grit sandpaper is actually 7000 grit. #shorts