What do the numbers on the tape mean?

The numbers on the tape measure are divided into two lines. The unit of one line is cm/cm, and the unit of the other line is inch. 1 cm is about 0.3937 inch, and 1 cm is about 2.54 cm, so the shorter unit of the two numbers is cm and the longer unit is inch. Digital fonts in centimeters are also smaller than those in inches, 100 cm = 1 m, and the commonly used unit is centimeters.

Tape measure is a common measuring tool in daily life. Steel tape measure is often used in construction and decoration, and it is also one of the necessary tools for families. Tape measure is divided into fiber tape measure, tape measure, waistline measure and so on. Lu Banchi, Feng Shui ruler and secretary also belong to steel tape measure.

Extended data

First, the principle of tape measure

The tape measure can be rolled up because it has a spring. When measuring the length, the length of the ruler and the spring is actually lengthened. After the measurement is completed, the spring in the tape measure will automatically shrink, and the ruler will also shrink under the action of spring force, so the tape measure will be rolled up.

Second, the measuring method of tape measure

The tape head is loose, so that we can measure the size. There are two ways to measure dimensions with a tape measure. One is hanging on the object, and the other is propping on the object. The difference between these two methods lies in the thickness of the iron sheet at the head of the tape measure. The purpose of loosening the tape head is to compensate the iron sheet at the tape head when the tape head abuts against the object.

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