Tape measure is a common measuring tool in daily life. What we often see is a steel tape measure, which is often used in construction and decoration, and is also one of the necessary tools for families. Divided into fiber tape measure, tape measure, waist measure and so on. Lu Banchi, Feng Shui ruler and secretary also belong to steel tape measure.
Principle of steel tape measure
The steel tape can be rolled up because there is a spring in it. When the tape measure 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 backwards with the spring force, so the tape measure will automatically roll up as we can see.
Main uses of steel tape measure
Steel tape measure is the most commonly used measuring instrument for measuring length, which is not only used in factories, but also widely used in various industries and even families. According to its use, it can be divided into three types: ordinary steel tape measure, which is used to measure the length of objects.
Sounding steel tape, mainly used to measure the depth of liquid. Steel measuring ruler, which is engraved with circumference ruler and diameter ruler, is convenient for measuring the diameter and circumference of cylindrical objects, so it is mainly used for measuring the diameter and circumference of objects.
Measurement method
1. Before measuring, check the tape measure of the tape measure, and it can be stretched freely without jamming. Then wipe the belt body and workpiece with dry cloth or cotton yarn.
Step 2 measure the size. Hook one end of the measured surface with a ruler hook, slowly pull out the steel tape, and stick the ruler close to the measured object, keeping the eyes in balance with the scale surface of the ruler.