Straitedge is longer
a rule has a different name then a ruler
Arabs have no united ruler, they have various political leaders in different countries.
Big different
A metric ruler measure a legth not a volume.
there are different measurements different rulers
compass,ruler,oscilloscope
A straightedge is round
Europe never had a single ruler. Its various countries have had hundreds of different rulers over the centuries.
why might you need to measure a perimeter with a measuring tape insteadof a ruler.
why are the division lines on a ruler diffrent lengths
There was no one ruler. It was a 1000 years long, so many people ruled many countries at different times.
Hatshepsut was the first woman to be a ruler of Egypt