Fancy new scales - Bone density? Muscle Percentage?

I tried my friend's fancy new scales and they gave me the following readings:

124.2lbs (i'm 5' 5 1/2")

fat percentage - 19.7%

water percentage - 59%

muscle percentage - 38.8%

bone density - 4.8

i know the body fat and water are good readings but i'm not sure about the muscle and bone density ones. are they good or not? is there a range? i had a quick google but couldn't really find anything very helpful. i've been doing a mix of cardio, weights and yoga so i'd like to know how that is affecting my body. i'm pretty much at the 'maintaining' stage of weightloss so looking now to improve my fitness and strength. any help?

The number is meaningless unless you look at the scale's instruction book. It should tell you what their parameters are and on how they get to their numbers.

yes, that's what i thought but the book gave no indication of ranges/values for muscle percentage or bone density. it is a 'salter' scale as well which is, i think, a really good make. strange.

Hi, did you ever find the ranges/values for muscle percentage or bone density? I looked in my Weight Watchers bathroom scale book, and it gives the guide to interpreting the body analysis. Would be glad to share it with you if you're still wondering!