Tool usage: secrets of steel tape measure that you may not know

Features: Tape measure is a very common tool in daily life, but we often find many of its designs difficult to understand when using it. In fact, every seemingly strange design on the tape measure is not useless, it's just that we don't understand their true purpose.

Firstly, if you have carefully observed the tape measure, you will remember that there is a hole at the hook of the tape measure.

So what exactly is its purpose? It can be stuck on a nail, so you don't need another hand or someone to fix the tape measure.

Secondly, the edge of the tape measure hook is not flat, but toothed.

Its use is when you need to draw a line at the measurement location and 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.

Thirdly, the front end of the tape measure is movable, and generally the length of the first compartment (1 centimeter) is shorter than that of the second compartment. Many people think that the design of this activity will affect the accuracy of the tape measure, but in reality, the flexibility of the tape measure hook is an important quality requirement for the tape measure. The first 1 centimeter contains 9 1 millimeter hooks with a spacing of 1 millimeter and a hook thickness of 1 millimeter.

In fact, when using a tape measure to measure the outer diameter of an object, you need to pull the tape back so that the measurement result is accurate. If you measure the inner diameter of an object, the hook of the tape measure itself has a thickness, and you need to retract this movable distance. This is why the front end of the tape measure should be designed to be flexible.

Fourthly, we often see numbers on the shell of a tape measure, but we don't know its purpose. For example, this tape measure is labeled with the number 69mm. So, what is its purpose? Actually, it represents the length of the tape measure casing.

Assuming you measure the length of a window and cannot read the exact number at the corner, the number marked on the tape measure will have a huge impact.

You need to place the tape measure on the same plane, with the outer shell of the tape measure stuck at the bottom, and then read the length on the tape measure, plus the 69mm length of the tape measure itself, to obtain the accurate length of this distance.

Fifth, the steel tape measure will have red arrow markings every 45.5 centimeters, which is a Japanese standard because the building module in Japan is 910mm, 45.5 centimeters is 1/2 module, and 91 centimeters is 1 module, making it convenient to measure the dimensions of standard building components

The design that we thought was unnecessary in those years actually contained such secrets. It turned out that the design of the tape measure was far more magical than we had imagined, and these secrets that we had not known for so many years were also quite magical.