Body Fat Caliper question

[tripwired]

I have two body fat calipers one is the plastic accu-measure one and the other is a digital fatTrack II. The problem is they both give way different results. Using the same formula the plastic one gives me a body fat percentage of 12% the digital gives me a 9%

Variations being
Plastic vs Digital
Chest 9mm vs 6mm
Abs 22mm vs 16mm
thigh 12mm vs 12mm (odd)

So which one is more accurate? the digital takes a lot more pressure to do the read out.

 

[Timan]

There is much difference between 12% and 9%. I think that you can rely on mirror or just post a picture here =)

 

[tripwired]

Unfortunately i can't post pics here but i uploaded one to my profile can you view that?