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This section provides an overview for inside vernier calipers as well as their applications and principles. Also, please take a look at the list of 4 inside vernier caliper manufacturers and their company rankings. Here are the top-ranked inside vernier caliper companies as of January, 2025: 1.HOLTS Precision Inc., 2.Shinwa Rules Co., Ltd., 3.Mitutoyo America Corporation.
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Inside Vernier Calipers are calipers specially designed to measure inside diameters. They are used in the same way as regular calipers, but they do not have a function for measuring external dimensions.
Analog calipers are read using a vernier scale, while digital calipers are the same as regular calipers in that the numerical value is directly displayed.
The feature of these calipers is that the jaws for measuring the inside diameter are longer, allowing the jaws to be inserted deeper into holes and tubes. Some manufacturers offer groove and point calipers that can measure stepped inside diameters and narrow grooves.
Inside Vernier Calipers are used to measure the inside diameter of holes and pipes.
Since the starting base point for measurement is not zero, it is necessary to create a base point using an inside width or ring gauge combined with a block gauge. position. Some digital Inside Vernier Calipers have an offset function, which allows the encoders base point to be adjusted freely, so the starting position can be set as desired.
The principle of Inside Vernier Calipers is similar to that of calipers for measuring inside diameters. As with ordinary calipers, the analog type reads the position where the main scale and the vernier scale coincide as a decimal point, while the digital type directly displays the numerical value of the scale attached to the main scale by means of an encoder.
Since measurement is often made by placing the jaw on the arc portion, it is necessary to pay attention to the pitching and yawing inclination of the scale. Tilting of the caliper or jaw can cause errors.
It should also be noted that calipers are not measuring instruments that follow the Abbe's principle, so if the measuring pressure is too strong, the jaws will open in a "C" shape, making it impossible to read the correct value.
When measuring a wall with a small radius of curvature, the corner of the jaw will hit the inner wall and the tip will be separated from the inner wall, which may cause an error. If this kind of phenomenon occurs, the inside caliper cannot solve the problem, so another measuring device will be used.
*Including some distributors, etc.
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Mitutoyo America Corporation was founded in Aurora, Illinois in 1963 by Mitutoyo Corporation of Japan as its American sales, marketing, and service subsidiary. The company provides parts service, manufacturing, and turnkey solutions for metrology equipment for aerospace, alternative energy, automotive, semiconductor, and other industries. The company’s product offerings include coordinate measuring machines, sensor systems, test equipment, and vision measuring equipment customized for customer needs. The company’s services include calibration and repair, installation, contract part programming, and training and education for operation as well as calibration.
Shinwa Rules Co. was founded in Niigata, Japan, in 1971. Shinwa Rules Co. develops a variety of measuring products including calipers, thermometers, hygrometers, laser optical apparatuses, and sheet heating elements. Above these, Shinwa develops metallic rulers and squares. Additionally, Shinwa operates as an OEM supplier for special calibrations and machine tools, special surface fabrication, and etching on metallic parts.
Ranking as of January 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | HOLTS Precision Inc. |
50.0%
|
| 2 | Shinwa Rules Co., Ltd. |
25.0%
|
| 3 | Mitutoyo America Corporation |
12.5%
|
| 4 | Nakamura Manufacturing Co., Ltd. |
12.5%
|
Derivation Method
The ranking is calculated based on the click share within the inside vernier caliper page as of January 2025. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
Japan
|
2 | 66.7% |
|
United States of America
|
1 | 33.3% |
36 products found - Page 2
36 products - Page 2
Nakamura Manufacturing Co., Ltd.
80+ people viewing
Last viewed: 5 hours ago
■Features Ideal for measuring spheres and pipes.
Nakamura Manufacturing Co., Ltd.
80+ people viewing
Last viewed: 1 day ago
■Features Ideal for measuring pipes and spheres. With external output function.
