a ruler is used to measure it
and cm, sometimes inches to
A meter rule.
It is necessary because measuring tools help you measure the length of an object accurately.
To measure a foot length you could use a ruler, a yard stick, a tape measure, or any object that you knew was precisely one foot long on a side or edge.
Use a string: put your finger where the string is at the edge of the object, then use a ruler to measure the tip of the string to your finger. Or use a protractor: each degree equals 1/16 of an inch.
By length width and height
Use a ruler.
You don't measure with length. You measure the length of an object with a ruler. You would use inches or metres as your units.
a cm
a ruler
If you want to measure the length, use a ruler.
You use a ruler or tape measure to measure this in units of choice
ruler
A meter rule.
It is necessary because measuring tools help you measure the length of an object accurately.
To measure a foot length you could use a ruler, a yard stick, a tape measure, or any object that you knew was precisely one foot long on a side or edge.
To estimate the length of a cat's body without the use of a ruler to measure, use an object that an estimate measurement is known to estimate the length of the cat.
Use a string: put your finger where the string is at the edge of the object, then use a ruler to measure the tip of the string to your finger. Or use a protractor: each degree equals 1/16 of an inch.