[EricH]

Originally Posted by team1591

we have one we bought last year for this purpose and it only costs $100 and it works great, we use it to weigh our robot and parts (i think it depends on the kind of scale, dont be cheap)

In your build site, great. At competition--if I were an inspector (I'm not), I'd say, "yes your scale says you are under, but bring it over to the official one". Either that or I'd make you calibrate yours.