I've used the digital bodyfat caliper and I must say that it's not accurate at all. The worst part is that it does not even yield consistant result.
I'm wondering if anyone has experience with this caliper shown below?

http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&category=33165&item=5502692427&rd=1&ssPageName=WD2V