I've just caught this thread on the hop, but a general rule with both=20
balances and scales is, they, even the electronic ones, differ according to=
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temperature, one reason why in some countries food shops are supposed to=20
tare scales at least twice day (morning/afternoon) using approved weights.=
=20
Whilst balances designed for medical/laboratory work have temperature=20
compensation built into them when taring they can still drift and require=20
periodic maintenance or checking against physical approved weights.

Scales are not on the whole designed to be as accurate at low weights,=20
which balances are. One of the reasons why balances are horrendously more=20
expensive to buy than scales.

Colin
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cdb, colin@btech-online.co.uk on 28/05/2013
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