Reading a ruler practice

To my knowledge, no. You can request for it to be part of Khan here:https://khanacademy.zendesk.com/hc/en-us/community/topics/200136634-New-Feature-Requests 

Hello Mrs. Mulhollem! My name is Lisa Krueger and I am a Khan Academy Ambassador teaching in Chicago. I believe user @ThePlanetCoder is correct regarding reading a 1/16 ruler practice. I did a quick google search and found several useful sites, here's one I think should help your students from homeschoolmath.net. I also, agree with user @ThePlanetCode in that you should fill out a new feature request form. Hopefully this helps. Thank you for posting and Good Luck!