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A ruler.
Ruler. Micrometers. Caliper.
A ruler (some say it should be called a rule!) is marked along an edge with (nowadays) centimetres and millimetres. Place the zero mark on the ruler at the start of the object to be measured, and read off the measurement at the other end of the object.
By unit of length and distance and conversion ,we can say that a centimeter ruler used for measuring the length,width of the objects in centimeters ,etc.
12" or the length of your ruler.
the measuring ruler that we use are the object which has length of 15 cm. 1 ruler =15 cm.
You measure it, using a ruler of another measuring device.
It is always a good idea to start measurements at a given mark on the instrument. This is because the ruler or measuring equipment may be damaged at the edges and thus will not give accurate results.
A ruler.
Use a ruler, measuring tape or other device for measuring length.
ruler
A ruler
Ruler. Micrometers. Caliper.
ruler and tape measure
a ruler is something that measures the length of an object
The metric ruler is a quantitative tool used for measuring the length, width, height or any other physical aspect of an object. While the act of measuring anything is easy, take care so that you produce the most precise measurements with a given ruler.
A measuring tape or a ruler