Yep, total crap. I got two to try them out and they read more than 20% different - and that's in a totally sealed box!
Definitely get an electronic one - I think most have +/- tolerance of about 5% (unless you spend serious money), so not exactly precise but good enough.
Definitely get an electronic one - I think most have +/- tolerance of about 5% (unless you spend serious money), so not exactly precise but good enough.
