In life, calipers belong to a relatively rare tool, after all, it is more on the industrial side of measurement, which leads to many people do not have a cursory understanding of it, in the use of the process is often ignored! But it does not matter, this time I will give you a detailed introduction to the use of calipers, its accuracy and the difference between the micrometer. 

1、Depth ruler 

First of all, the depth of the caliper ruler will be unraveled, it will be put into the hole of the object to be measured, such as a nut and so on, the depth of the ruler body is particularly thin, so it can be penetrated into most of the objects. However, it is important to note that it can be dangerous and should not be played with by children. 

Once the depth gauge is inside the object to be measured, you need to keep it parallel to the outer wall and lock its screws, and observe the scale of the main gauge, which is usually added to the scale of the slide rule to obtain the depth of the object to be measured. 

2、Inner measuring claw 

The internal measuring claw is an inverted "eight" structure whose main purpose is to measure the internal diameter of the object. For example, the internal dimensions of pipes and nuts can be used to customise the tool to match. If the internal diameter of the nut is measured, the matching screw can be found. 

The measurement is made by modulating the inner measuring jaw of the caliper to the appropriate size directly into the object to be measured. For example, the pipe, directly deep into the mouth of the pipe, after the continuous enlargement, inverted "eight" two feet, and the inner wall of the pipe to fit, lock the screw, after recording data. 

3. External measuring claw 

This is the same as the internal measuring device, but it mainly measures the external diameter. For example, a ping pong ball is difficult to measure with an ordinary ruler, but you can use the external measuring jaws, by constantly adjusting the tightness until it fits the two sides of the ping pong ball, so that you can visually record the data. 

These are the three main functions of the caliper, of course, as an industrial measuring appliance, its accuracy will certainly need to be high, the vast majority of learning supplies are accurate to 1MM for the unit! Industrial calipers are divided into three different standards of precision scales, the standard from loose to strict, respectively 0.05, 0.02 and 0.01, the three units are MM, is the most accurate, is our study with the ruler of 100 times! You can see how rigorous it is. 

Finally, I will give you a few words about the differences between calipers and micrometers. 

In fact, the most practical difference, is the literal meaning of the micrometer, what is meant by a thousand points, accurate to a thousand points, i.e. 0.001 MM, which is ten times more accurate than the most accurate calipers, and therefore often used for the measurement of some scientific research instruments. In addition, the micrometer is also called a spiral micrometer, its use is actually more extensive compared to calipers, but the disadvantage of the micrometer is that it is troublesome to operate, and there is no caliper like, can measure the depth and internal diameter of the object, in short, between the two tools have advantages and disadvantages, in fact, does not conflict. 

From the point of view of everyday work, the calipers, which are more coarse in their accuracy, are a little more practical.

In life, calipers belong to a relatively rare tool, after all, it is more on the industrial side of measurement, which leads to many people do not have a cursory understanding of it, in the use of the process is often ignored! But it does not matter, this time I will give you a detailed introduction to the use of calipers, its accuracy and the difference between the micrometer. 

1、Depth ruler 

First of all, the depth of the caliper ruler will be unraveled, it will be put into the hole of the object to be measured, such as a nut and so on, the depth of the ruler body is particularly thin, so it can be penetrated into most of the objects. However, it is important to note that it can be dangerous and should not be played with by children. 

Once the depth gauge is inside the object to be measured, you need to keep it parallel to the outer wall and lock its screws, and observe the scale of the main gauge, which is usually added to the scale of the slide rule to obtain the depth of the object to be measured. 

2、Inner measuring claw 

The internal measuring claw is an inverted "eight" structure whose main purpose is to measure the internal diameter of the object. For example, the internal dimensions of pipes and nuts can be used to customise the tool to match. If the internal diameter of the nut is measured, the matching screw can be found. 

The measurement is made by modulating the inner measuring jaw of the caliper to the appropriate size directly into the object to be measured. For example, the pipe, directly deep into the mouth of the pipe, after the continuous enlargement, inverted "eight" two feet, and the inner wall of the pipe to fit, lock the screw, after recording data. 

3. External measuring claw 

This is the same as the internal measuring device, but it mainly measures the external diameter. For example, a ping pong ball is difficult to measure with an ordinary ruler, but you can use the external measuring jaws, by constantly adjusting the tightness until it fits the two sides of the ping pong ball, so that you can visually record the data. 

These are the three main functions of the caliper, of course, as an industrial measuring appliance, its accuracy will certainly need to be high, the vast majority of learning supplies are accurate to 1MM for the unit! Industrial calipers are divided into three different standards of precision scales, the standard from loose to strict, respectively 0.05, 0.02 and 0.01, the three units are MM, is the most accurate, is our study with the ruler of 100 times! You can see how rigorous it is. 

Finally, I will give you a few words about the differences between calipers and micrometers. 

In fact, the most practical difference, is the literal meaning of the micrometer, what is meant by a thousand points, accurate to a thousand points, i.e. 0.001 MM, which is ten times more accurate than the most accurate calipers, and therefore often used for the measurement of some scientific research instruments. In addition, the micrometer is also called a spiral micrometer, its use is actually more extensive compared to calipers, but the disadvantage of the micrometer is that it is troublesome to operate, and there is no caliper like, can measure the depth and internal diameter of the object, in short, between the two tools have advantages and disadvantages, in fact, does not conflict. 

From the point of view of everyday work, the calipers, which are more coarse in their accuracy, are a little more practical.