Tape measure is a commonly used measuring tool in daily life. Usually, the steel tape measure is often seen by people. It is usually used for construction and decoration. It is also one of the necessary tools for the family. It is divided into fiber tape measure, tape measure, waist measurement, etc. Luban ruler, Feng Shui ruler, and Wen Gong ruler also belong to steel tape measure.
1. Features
Gift rulers are used for advertising. They are divided into steel tape (steel tape) and leather tape (PVC plastic fiber tape). They are generally cute in shape and relatively small. Tape measure, tape measure is also called measuring tool, and 85% of the tape measure in the world is exported from China.
2. Principle
The steel tape can be rolled up because of the spring in the ruler. When the length measuring tape is pulled out, it is actually stretching the length of the ruler and the spring. After the measurement is completed, the spring in the tape measure will automatically shrink, and the ruler will shrink back under the action of the spring force, so the tape measure will automatically roll up as we saw.
Three, the main purpose
Steel tape measure is the most commonly used measuring instrument when measuring length. It is not only used in factories, but also widely used in various industries and even households. According to its application, it can be divided into three types: ordinary steel tape measure, used to measure the length of the object; depth sounding steel tape measure, mainly used to measure the depth of liquid; steel ruler, engraved with the circumference ruler and the diameter on the tape Ruler is convenient for measuring the diameter and circumference of cylindrical objects, so it is mainly used to measure the diameter and circumference of objects.