Scales weigh things
for us. There are many kinds of scales though and you will want
to try some of them. Postage scales, kitchen scales, fish
scales, balance scales, truck scales used by highway
authorities.

Can you weigh things
without a scale? You can! Use a balance or comparison methods. A
balance has a weight of a set size on one side. You place your
object into the other side of the balance until you can get the
sides to be level. Ancient Egyptians used this method of
weighing heavy things.

You can also
estimate the weight of things by comparison. Use an item that
you know the weight of, such as a sack of sugar. Estimation is
how you know the two things compare. Is your object heavier or
lighter than the sack of sugar?

In many professions
extreme care is used to weigh items exactly. Many scales are
digital and give more precise measurements than were possible to
all citizens.

The skill of
weighing items and learning the basic weights used is important.
It is also interesting to note how weights and measures differ
in various countries. Weighing items can be of great interest
and help you develop the ability of estimating weights which
will come in handy many times. How much do you weigh? How much
would you weigh on the moon?
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