What does a ruler think of centimeters?

It can be done by preparing a ruler, the length of the ruler, observing centimeters and observing millimeters.

Prepare a tape measure. The length of a tape measure is generally 150 cm, and the longest is100 m. It is used in tailoring and clothing industry, and is generally called a clothing measuring ruler.

Generally, the length is150cm/45in,150cm/60i, 200cm/79in and 300cm/120i.

Turn the tape measure to the front for observation. Each scale on the scale represents 1 cm.

Observe the centimeter scale of the tape measure, and each scale in the scale is 1 mm.