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Any measurements – for example, of temperature, distance, time or weight – are based on units. A unit is a fixed quantity. In ancient times, body parts were used to measure length. The Greeks used the finger as a basic unit of length, with 16 fingers equaling one foot. Measurement of weight was originally based on how much a man could lift. These imprecise measurements developed into a system of common units.
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In ancient times, body parts were used to measure …
temperature
distance
weight
length