How to read the vernier ruler, how to read the vernier caliper

The 0 of the sub-ruler is aligned with the integer of the main ruler to read the main number, the sub-ruler and the main ruler completely coincide with the scale line of the sub-ruler The reading of the sub-ruler is the reading, no matter how it is divided, the sub-ruler should be a 0-10 or 0-100 reading, you will regard the sub-ruler as 1 Okay, the main number between 15 and 16 is 15, the total of the sub-ruler is 1, it is impossible to 16, if there is a scale of 98, then this grid should represent, not what you said.

You use 11* in front of you, and 98* in the back, one, one, is why?

Can you give me my brother's share?

Question 1: As long as 15 is less than 16, the principal number is still 15

Question 2: What you are talking about is the accuracy of the vernier caliper, that is, the principle of the vernier caliper sub-ruler (you count it well, the sub-ruler is only 50 small cells, and what it represents is a 1mm difference, 1mm 50 = is obtained in this way).

In fact, the reading of the sub-ruler is the value of the scale of the sub-ruler to align with the scale of the main delay is the value of the sub-ruler, if there is one more grid after the sub-ruler 2 to align with the main ruler, then the reading is, that is to say, a grid is.

ps: The subnumber you said above is 11 or 96, which is not true, only it is possible or, then his actual value is or!

1. When the vernier caliper is read, the scale is located between the two values, and the reading of the main ruler is read first, and the whole number should be taken. 2. Then read the value indicated by the cursor, observe the alignment of the first few tick marks on the cursor with the tick marks of the ruler, and then read and calculate. 3. Add the reading of the main ruler and the number of secondary rulers.

How to read vernier calipers

Vernier caliper is a measuring tool for measuring length, inner and outer diameter, and depth, and its main components are: the vernier caliper main ruler and the vernier attached to the main ruler that can slide.

The main ruler is generally measured in millimeters (mm), while the vernier has or 50 compartments. Therefore, when reading the value of the vernier caliper, one is the reading of the main ruler, and the other is the vertical reading of the number of secondary rulers and the main ruler, and the two values should be added together, which is the final value we want.

Precautions for the use of vernier calipers

1. Vernier calipers are more precise measuring tools, and they should be handled with care when using them, and should not collide or fall to the ground.

2. Do not use vernier calipers to measure rough objects, so as not to damage the measuring claws, and also avoid putting them together with sharp cutting tools.

3. Vernier calipers should be stored in a dry and neutral place, away from acid and alkaline substances, to prevent corrosion.

Vernier calipers are read according to the following rules:

1. Based on the position of the vernier zero engraved line, read the whole millimeter on the main ruler.

2. See which engraved line on the vernier is aligned with a certain tick line on the main ruler (regardless of how many engraved lines) are aligned, and the decimal number below the millimeter is read out from the vernier.

3. The total reading is millimeter integer plus millimeter decimal place.

Vernier calipers (vernier calipers) are a measuring tool used to measure length, inner diameter, outer diameter, and depth. A vernier caliper consists of a master ruler and a sliding cursor attached to the master ruler.

The main ruler of the millimeter is usually as a unit, there are 10, the vernier is 20 or 50 points, according to different points, the vernier caliper can be divided into ten degree vernier caliper, 20 degree vernier caliper, 50 degree vernier caliper, etc., 9 mm vernier is 10 degrees, 20 degrees 19 mm, 50 minutes 49 mm.

1. Accuracy

Commonly used vernier calipers can be divided into three types according to their accuracy: i.e. and. Vernier calipers with an accuracy of and .

It works on the same principle and is used in the same way as the vernier caliper described in this article with an accuracy of . A vernier caliper with an accuracy of millimeters has 20 equidistant marks on a vernier with a total length of 19 mm.

When measuring, align the 11th tick mark on the vernier with the master ruler, and the reading of the decimal point is 11 20mm. If the twelfth tick mark is aligned with the main scale, the decimal part reads 12 20mm.

Generally speaking, cursors are vertically contained in the n-scale band, their total length and the total length of the foot (n 1) is equal to a nucleus of a uniform scale, if the cursor size is the smallest length (x) of the smallest scale of the foot length nx yy(n 1), x y(y n) the funny difference between the foot and the minimum scale of the cursor δx y y y n is called the precision of the vernier caliper, which determines the outcome of the reading number.

As can be seen from the formula, to improve the measurement accuracy of the vernier caliper is to increase the number of scales on the vernier or decrease the minimum scale value on the master ruler. Under normal circumstances, y is 1mm, n is , and the corresponding accuracy is05mm、。

Due to the limitation of structural accuracy and the resolution of the alignment of the two lines by the human eye, the accuracy of the precision mechanical vernier caliper cannot be improved.

2. Storage methods.

After using the vernier caliper, wipe it clean with cotton yarn. If you don't use it for a long time, you should rub it with butter or engine oil, close the two measuring jaws and tighten the fastening screws, and put it in the caliper box and cover it.

Vernier calipers have 4 minimum readings: 10 equally divided scales on the vernier05mm (20 equally divided scales on the vernier.)02mm (50 equally divided scales on the vernier) and 100 equally divided scales on the vernier).

The vernier caliper readings are read as follows:

1. Vernier calipers are generally divided into three types: 10 indexes, 20 divisions and 50 divisions, the 10 indexing vernier calipers can be accurate, the 20 indexing vernier calipers can be accurate, and the 50 indexing vernier Bixiao with calipers can be accurate.

2. Look at the total scale of the vernier ruler to determine the precision (accuracy of 10 indexes, 20 divisions, and 50 divisions).

3. Read out the whole millimeter (x) of the main ruler on the left side of the zero scale mark of the vernier ruler.

4. Find out the position of the vernier ruler and the main ruler scale "opposite", and read out the number of small squares (n) from the alignment line to the zero scale mark on the vernier ruler (do not estimate it).

5. Read out the measured value according to the reading formula.

The minimum division on the ruler is 1mm, there are 10 equal divisions on the vernier, and the total length is 9mm on the main ruler, then each ascending division on the vernier is, and the difference between a scale on the main ruler and a scale on the vernier.

Considerations for vernier caliper readings

1. Vernier calipers are more precise measuring tools, which should be handled with care, and should not collide or fall to the ground. Do not use it to measure rough objects when in use, so as not to damage the measuring claw, and should be placed in a dry place to prevent rust when not in use.

2. When measuring, the fastening screws should be tightened first, and the moving vernier should not be too forceful. The contact between the two claws and the object to be measured should not be too tight. Do not move the clamped object in the measuring jaw.

3. When reading, the line of sight should be perpendicular to the ruler surface. If you need to fix the reading, you can use a fastening screw to fix the vernier to the ruler to prevent the finger from slipping.

4. When actually measuring, the same length should be measured several times, and the average value should be taken to eliminate accidental errors.

Vernier caliper is to use the difference between the line spacing on the master ruler (referred to as line spacing) and the line spacing on the vernier ruler to read the decimal part, for example: the line spacing on the master ruler is 1 mm, and the line spacing on the vernier ruler is 10 squares, and the line spacing is mm. When the zero lines of the two coincide, if the vernier ruler moves by millimeters, its first line coincides with the first line of the main ruler; If the vernier ruler moves by millimeters, its second tick line coincides with the second tick of the master ruler.

And so on, the decimal part of the value can be read from the coincidence of the inscribed line on the vernier ruler and the master ruler. The difference between the line distance between the master ruler and the vernier ruler in millimeters is the minimum reading value of the vernier caliper.

Similarly, if the difference between their line spacing is millimeters or millimeters (20 or 50 divisions on the vernier scale), the minimum readings are millimeters or millimeters, respectively. The vernier principle is the French pPresented by Vernier in 1631.

It is commonly used in subdivided reading mechanisms for the length and angle of length measurement tools. For details, please refer to the national standards (GB T21388, GB T21389, GB T21390).

1. When reading, first read the millimeter integer on the ruler based on the vernier zero tick mark, that is, the integer part in millimeters.

2. Then look at the alignment of the first tick mark on the vernier with the tick mark of the ruler body, if the 6th tick mark is aligned with the ruler body tick mark, the decimal part is millimeters (if there is no line that is exactly aligned, then take the line closest to the alignment for reading).

3. If there is a zero error, the above result will be subtracted from the zero error (the zero error is negative, which is equivalent to adding a zero error of the same size).

4. The reading result is: l = integer part + zero error of decimal part.

5. To judge which tick line on the vernier is aligned with the ruler tick line, the following methods can be used: select three adjacent lines, such as the line on the left side is on the right of the corresponding line of the ruler body, and the line on the right side is on the left side of the corresponding line of the ruler body, measure the average value several times, and do not need to subtract the zero error every time, as long as the zero error is subtracted from the final result.