1, use new scales need to be placed in a plain ceramic tiles or on the ground, scales do not pad anything below, if it is placed on carpet or uneven weighting will not be allowed on the ground. Results of three times before the new scales that don't count, followed by accurate and very precise.

2, this is a high precision body scale, normal errors less than 0.1 kg, more than 0.5 kg sold so many have not found error, if you go back and find "Disallow", 99.99% is improper usage