Scale Digital
Posted in Instruments by admin
on April 6, 2010
is there uncertainty in a digital scale?
this is for a physics lab, and i'm trying to add up the uncertainties in my measurements, but a mass was obtained from a digital scale that gave me four decimal places. so does that have any uncertainty or is it an exact measurement?
You can get a feel for the precision of your measurement by watching the numbers--usually the last digit will float around a bit. In addition, your scale may or may not have accuracy / calibration issues. At a minimum, assume +/- 1 in the last digit of the measurement.
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