Salter 2001 electronic kitchen scale "homedics bathroom" Questions

Have a Homedics scale SC430 - it consistently weighs objects 4lbs light.....How do I reset it look under the edge there should be a dial to turn

replacing batteries in salter 2001 How do I fit the batteries Which way round? http://mx.homedics.co.uk/cms/mx/manuals/Bathroom/IB-9139-0310-01.pdf + side up on left side - up on right

...Homedics Bathroom Scale. The first day my body fat measured at 27.4, on days 2-4, it measured at 34.4 and today on day 5, it measured at 14.5%. In the beginning I don't believe that I was standing on ...

How do I reprogram my bathroom scale? It got wet and lost the dataI had put in.Thanks take out the battery for 24 hrs. then reinstall it and see if it resets. it should do so