I am working on the methods in the book BFFM and I bought the caliper to measure my body fat. Each week I measure with everything being the same and I have lost lbs and my clothes are looser but the caliper hasn't changed. Am I doing something wrong or should I invest in a more accurate tool to measure body fat ie. the Tania scale? I noticed on the Accu-measure it seems as though it won't show small percentage changes which is what happens when you loose only a lb or two a week. I have been measuring for 4 weeks. Any thoughts out there? Thanks Vicky