How accurate is the vernier caliper, and what is the accuracy of the vernier caliper?

Accurate to the second decimal place. Often used for 2113.

Vernier calipers. According to its accuracy, it can be divided into 3 types: millimeter, millimeter, and millimeter. Vernier calipers with millimeter and millimeter accuracy. They work on the same principle and use in the same way as vernier calipers with millimeter accuracy described in this article.

Vernier calipers with millimeter accuracy have 20 aliquots on the vernier 5261 with a total length of 19 mm. When measuring, if the 11th tick mark on the vernier is aligned with the master ruler, 4102 the decimal part reads 11 20 mm = mm, if the 12th tick mark is aligned with the master ruler, the decimal part reads 12 20 mm = mm.

Extended Materials. There are n equal parts on the vernier 1653, and their total length is equal to the total length of (n 1) equal parts of the scale body, if the minimum scale length on the vernier is only x, and the minimum scale length on the main ruler is y.

nx=(n 1)y,x=y (y n) The difference between the minimum scale of the main ruler and the vernier is δx=y x=y ny n is called the accuracy of the vernier caliper, which determines the number of digits of the reading result.

As can be seen from the formula, improving the measurement accuracy of the vernier caliper lies in increasing the number of scales on the vernier or decreasing the minimum scale value on the master ruler. Under normal circumstances, y is 1 mm, and n is taken as the corresponding accuracy of mm, mm, mm.

It depends on the specifications of the vernier caliper. Vernier calipers of tenths can be accurate to one decimal place (in millimeters 2113) and twenty degrees of vernier calipers, and vernier calipers that can be accurate to two decimal places in millimeters, and vernier calipers that can be accurate to two decimal places in millimeters).

The vernier caliper is composed of two parts: the main ruler and the 5261 vernier attached to the main ruler that can slide. The main ruler is generally in millimeters, and there are or 50 sub-grids on the vernier grid, according to the different sub-grids, the vernier card 4102 feet can be divided into 10 degrees vernier caliper, 20 degrees vernier caliper, 50 degree vernier caliper, etc., the vernier is 10 divisions of 9mm, 20 divisions of 19mm, 50 divisions of 49mm.

There are two sets of movable measuring jaws on the main ruler and vernier of the vernier caliper, which are the inner measuring claw and the outer measuring claw, the inner measuring claw is usually used to measure the inner diameter, and the outer measuring claw is usually used to measure the length and outer diameter.

Extended information: Because the 1653 vernier caliper is a relatively precise measuring tool, it has been widely used in industrial measurement length, with the development of science and technology and the continuous growth of the industry, the digitization of testing instruments is the general trend of current and future instruments, and the measurement efficiency of the workpiece will be more and more demanding.

When the capacitance of the object measured between the measuring claws is millimeters, the vernier ruler should be moved to the right by millimeters. At this point, its first tick mark is exactly aligned with the 1 mm tick mark of the ruler.

PrecisionVernier calipers. The readings are as follows:

Reading=The scale of the main ruler (the scale of the main ruler corresponding to the sub-ruler 0 is rounded) + the number of grids aligned between the sub-ruler and the main ruler * the accuracy (

The following is an example:

1. First of all, look at the position of the sub-ruler "0", which determines the first two digits. 0 in the figure is behind . That is, the inner diameter of the measured object is.

2. Then observe the indexing (accuracy) of the sub-ruler. , that is, how many grids are 20 divisions in the chart, that is, the accuracy is. (Units per index = 1 mm division).

3. Then look at the digits that the sub-ruler and the main ruler completely coincide, and look at the red frame, the overlapping part is 3 squares with the two differences. That is, the overlap is 17. Each unit is , the final digit is obtained, and the final measurement is that the inner diameter of the target is.

How to use vernier calipers:

Wipe the measuring claws clean with a soft cloth so that they are close together, and check whether the vernier and the zero scale mark of the main ruler are aligned. If it is aligned, it can be measured: if it is not, the zero error is recorded:

The zero tick mark of the vernier on the right side of the zero tick mark of the ruler body is called the positive zero error, and the one on the left side of the zero tick mark of the ruler body is called the negative zero error (this piece stipulates the method and number axis.

The origin is positive on the right and the origin is negative on the left).

When measuring, hold the ruler body with the right hand, move the vernier with the thumb, and hold the object of the outer diameter (or inner diameter) to be measured with the left hand, so that the object to be measured is located between the outer measuring claws, when it is closely attached to the measuring claw, it can be read, when measuring the outer size of the part: the line of the two measuring surfaces of the caliper should be perpendicular to the surface to be measured, and can not be skewed. When measuring, you can gently shake the caliper to align it in a vertical position.

Accurate to the second decimal place. Commonly used vernier calipers can be divided into 3 types according to their accuracy: millimeters, millimeters and millimeters.

Vernier calipers with an accuracy of millimeters and millimeters. They work on the same principle and use in the same way as the mega vernier calipers with millimeter accuracy described in this article.

Vernier calipers with millimeter accuracy have 20 aliquot scales on the vernier for a total length of 19 mm. If the 11th tick mark on the vernier is aligned with the master ruler, the decimal part will read 11 20 mm = mm, and if the 12th tick mark is aligned with the master ruler, the decimal part will read 12 20 mm = mm.

The accuracy of the 50-scale vernier caliper is that the main ruler of the vernier caliper reads 20mm, and the 5th scale on the vernier ruler is aligned with a certain scale on the main ruler.

Each grid of the 20 index is and each grid of the 50 index is the high accuracy of the reading on the dividing slip scale of the vernier card scrambling cover ruler, and the low accuracy may sometimes need to be estimated.

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).