A tape measure is a commonly used length measuring tool in daily life, and 85% of the world’s tape measures are produced and exported from China. The main types that people often come into contact with are leather tape measures and steel tape measures. Leather tape measures can be long or short, and longer leather tape measures are generally used in engineering, with a length of up to tens of meters. Short leather tape measures are mainly used in the clothing industry and daily life, mainly for measuring body size, waist circumference, etc. Steel tape measures are mainly used in construction and decoration, and are also one of the essential tools for families.

Tape measure
Fiber tape measure is a commonly seen measuring tape, which many people refer to as fabric measure, and also as waist measure (both tailor measure and garment measure belong to this category). In the southern part of China and Hong Kong, a tape measure is commonly referred to as a tape measure or a tape measure. Its materials are PVC plastic and fiberglass, which can prevent elongation during the use of the tape measure.
A measuring tape, usually in the metric and imperial system, is 150 centimeters on one side and 60 inches on the other side. Inches are commonly used units of measurement in foreign countries, with one inch=25.4 centimeters. The unit of measurement for televisions and monitors is inches, usually referring to diagonal length. And the size of the jeans is also inches. In China, the commonly used measuring tape is the market size. One side is 150 centimeters, and the other side is 45 inches. The commonly mentioned 2 foot 1 waist and 2 foot 2 waist are market units. One foot equals ten inches, and one meter equals three feet, so one inch equals 3.333 centimeters.
Steel tape measure
The main types of tape measure are steel tape measure, Lu Ban ruler, Feng Shui ruler, and Wen Gong ruler, all of which belong to steel tape measure. A steel tape measure usually has two scale bars on the front, with the upper part in inches and the lower part in the commonly used metric units in China. Conventional lengths include 3m, 5m, 10m, etc. Nowadays, the traditional Lu Ban tape measure is added to the tape measure to become a new type of Lu Ban tape measure, with the addition of eight characters to measure the auspiciousness of houses and houses. Working principle of curling
The reason why a tape measure can be rolled up is because there is a spring inside the tape measure. When pulling out to measure the length, it actually elongates the length of the ruler and spring. Once the measurement is completed, the spring inside the tape measure will automatically shrink, and the ruler will also shrink under the force of the spring, so the tape measure will be rolled up. Usually, there is a hook at the front end of the tape measure for positioning during measurement.
Interesting design intent
There are some seemingly strange but actually very interesting designs on the tape measure, but we don’t understand their true purpose. Here, I would like to popularize some interesting designs on tape measures for readers.
1. There is a hole at the hook of the tape measure
If careful readers have carefully observed the tape measure, they will find a hole at the hook of the tape measure. So what is it used for? The following picture will give you a sudden realization. That’s right, it can be stuck on a nail like this, and you don’t need another hand or another person to fix the tape measure for you. This design can greatly improve measurement efficiency without the need for particularly precise measurements.
2. The edge of the tape measure hook is not flat, but toothed
Its purpose is to use it when you need to draw a line in the measurement area but don’t have a pen in your hand. Hold it down and rub it a few times at the position where you need to draw a line to help you identify it.
3. What is the function of the back buckle on the tape measure?
Like many old-fashioned keychains, the back buckle on the tape measure is mainly used for carrying. In many construction sites and measurement sites, workers can directly hang their belts or pockets after measurement, and then continue with other operations. When used again, it is convenient and fast to take it out as needed.
4. What is the purpose of the numbers on the outer shell of the tape measure?
We often see numbers on the tape measure case, but we don’t know its purpose. For example, this tape measure is labeled with the number 16mm. So what is it used for? In fact, it represents the length of the outer shell of the tape measure.

Many designs that we think are unnecessary actually contain the designer’s good intentions and secrets. The design of the tape measure is far more magical than we imagine.