What instrument measures grams?
A gram is a submultiple (1/1000th) of the
kilogram, which is the SI Base Unit for mass.
Mass is measured using a scale balance: a
device with two pans suspended from a horizontal beam. A balance
cancels the effect of gravity, while allowing the mass of an
unknown object to be compared with a known mass -usually provided
from a set of very accurate standard masses.
Weight, on the other hand, is the force due to
gravity and is measured in newtons and is measured using a
spring balance. A spring balance is stretched by the
force acting on a body due to gravity and, so, measures its
(Although a spring balance actually measure
weight, they are often calibrated to indicate mass.
As weight varies from place to place, whereas mass doesn't, this
means that a spring balance will only accurately indicate mass at
the place where it has been calibrated. This is also true of
digital scales, which also measure weight but are usually
calibrated to indicate mass.)
The jewelry scale that weighs grams Troy gram