Yes, you can buy calipers from medical supply companies. A caliper is a measuring device for body fat. There are numbers on it marking how wide the calipers will open up. You then take the number for how wide the calipers open and correlate it to the part of the body you are using to figure out what your body percentage it. It is something you could do yourself. If you are nervous it would be better to have a professional do it on the day to day basis. You certainly can learn how to do it and you can keep track of you own body fat percentage that way. You can find out what your BMI (
Body Mass Index) should be by looking up a web site that would actually have those tables on there.