[muawiyah]

What you need to do is provide a copy of that "test data acceptance sheet" or a URL that will take me to it.

Strain gauge is quite a general term, and so is load cell these days. So, look at the OHAUS catalog ~ they have all sorts of devices there.

A mass spectrometer can measure 1 part in a billion.

Are you aware what "billion" means in English English?

[NewinTexsas]

A mass spectrometer can measure 1 part in a billion.

You said that a bathroom strain gauge could output to 1 part in a billion. You have continued to NOT respond to my requests for you to post specs of such a device.

Please also provide a diagram showing your balance screws in the bathroom scale that need adjusting. Thanks.