Moved From Discussion Page - Posted by Aggie Earth doesn't have a 'length.' It has a circumferance, a mass, a volume, even a length of time or age, but it doesn't have a length.
The instrument used to measure Earth's circumference is called a theodolite. It is a precision instrument that measures horizontal and vertical angles. By measuring angles between points on Earth's surface, scientists can calculate the size of Earth.
there are many instruments used to measure length depending upon the size of object , Ruler is Metric instrument used to measure length. Screw gauge is also used as an instrument used to measure length in mm.
meter stick
The 17-letter word for an instrument used to find mass is "spectrophotometer."
It's used by internal physiological mechanisms of several species of insects, fish, birds, and animals. When used by humans, we don't have those physiological mechanisms, or at least if we have them we don't know how to use them, so we use the magnetic compass.
An instrument used for measuring a quantity of something is called a measuring device or a measuring instrument. Examples include a scale for measuring weight, a ruler for measuring length, or a thermometer for measuring temperature.
the ruler The meter stick
The instrument "Metalic tap" is generally used for length measurement in India
there are many instruments used to measure length . measuring tape is used to measure the length of room.
dendrometer
mass
A pedometer.
there are many instruments used to measure length depending upon the size of object , Ruler is Metric instrument used to measure length. Screw gauge is also used as an instrument used to measure length in mm.
It is a meterstick!
Meterstick
Ruler, meter stick, yard stick
centimeter
Vernier Calipers are instruments that are used measure length. It is an instrument that provides a digit of accuracy.