All I know is that it is around the same size as a large school bus. Sorry I don't know how long school busses are.
scale or ruler is an instrument used for measuring length
The instrument "Metalic tap" is generally used for length measurement in India
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.
there are many instruments used to measure length . measuring tape is used to measure the length of room.
A meter stick or a metric ruler is used to measure metric length.
A metric ruler.
the ruler The meter stick