Ahh.....a 511! There's posh for you! I only knew about these toys when reading my Which? recently so nipped to Salisbury's Argos & bought their last 508 in stock. It does body fat, visceral fat, weight & BMI. It the vesceral I find engaging! A weak electrical current & bingo. Very clever. I'll check for 511.....thanks for the tip.
Terry - I'm certainly not suggesting you have bought something inappropriate. I can't recall the differences between the 508 and 511, but if I recall it was a "nice to have", rather than a "mandatory" in my selection process. For me, the mandatory really was the hand grips, for a more accurate assessment via hand<>feet, as opposed to just feet or just hands, which tend to assess the upper or lower body respectively.
Yes, the visceral fat (VF) score is interesting, although it is only a numerical scale from 0-9 and I can't find anything, anywhere that talks about optimum levels, so I work on it that a modest number is desirable. I honestly can't recall what I was for VF at the outset, and I haven't recorded that progress, but I do know I sat at 4 for what seemed like forever, and am now on 3. I've been at 3 for quite some time (more than 12 months). It's just good to keep an eye on these things.
As with any other form of measurement, it makes sense to have a controlled regime for doing your readings. For me, I use my first bathroom trip of the morning to do both fasting blood score, then step on the scales. I only use the full monitoring functionality once or twice a month, but do weight daily. That way I got to understand my natural weight fluctuations day-to-day.
As you would expect, hydration in particular can impact on your readings, hence I use first thing as I know exactly what fluids I will have taken on-board beforehand (none!), whereas later in the day that would be a constant variable.
If you're a data monster, you'll enjoy the scales.