8 Test Indicator Manufacturers in 2023
This section provides an overview for test indicators as well as their applications and principles. Also, please take a look at the list of 8 test indicator manufacturers and their company rankings. Here are the top-ranked test indicator companies as of March, 2023: 1.Starrett, 2.Mahr GmbH, 3.Noga Engineering & Technology Ltd..
Table of Contents
What Is a Test Indicator?
A test indicator is a so-called lever-type dial gauge.
The measuring element at the tip moves up and down per displacement, amplifies the displacement using the principle of leverage, and the amount of displacement is converted into rotational movement of the needle to display the indicated value on a dial scale.
Depending on the shape and orientation of the display plate, there are standard, inclined, vertical, and horizontal types. There is also a universal type in which the dial scale can be oriented in any direction. The scale ranges from 0.01 mm to 0.001 mm per graduation, and the measuring ranges are large and small.
Uses of Test Indicators
Test indicators can be used not only for dimensional measurement but also for measuring flatness and parallelism by measuring several points on the plane of the object to be measured. It can also be attached to a machine tool's spindle to measure the rotary axis's runout. The runout value is used for various purposes, such as centering the rotary axis.
Test indicators are available from various manufacturers in terms of the direction of the scale plate, length of the measuring element, etc. This allows for the selection of optimum suitability for the application and situation.
Principle of Test Indicators
The test indicator has a built-in displacement amplification mechanism called a movement, a combination of gears inside the main frame. A measuring element attached to the movement is outside the main frame, and the measuring element moves up and down to measure the displacement.
The displacement of the measuring element is amplified in the movement using the principle of leverage. It is converted into the rotational movement of the needle through repeated amplification by a combination of gears. The amplification is so significant that displacement can be measured in increments of 0.001 mm. However, because of the substantial amplification, the range measured is as minimal as 1 to 2 mm, and the needle will swing beyond this range. Forcibly applying displacement while the needle is out of range can cause a malfunction.
The length of the measuring element must be adjusted according to the model and displacement. Therefore, if a combination not included in the manufacturer's lineup is used, the accurate measurement value will not be displayed even if it is possible to install it successfully.
List of 8 Test Indicator Manufacturers
*Including some distributors, etc.
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Mod-Tronic Instruments Limited
Test Indicators
Company Overview
MOD-TRONIC Instruments Limited was established in 1972 in Brampton, Ontario, Canada. MTis a distributor of industrial sensors, transducers, heaters, controls, and instrumentation, primarily made in the USA as well as Japan, Switzerland, and Germany. MT’s customers are primarily in the aerospace, building automation, manufacturing, medical, military, oil and gas, and water treatment industries but also serves individuals. MT offers an above industry standard 5-year warranty and technical support on every product sold.
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Noga Engineering & Technology Ltd.
DIAL TEST INDICATOR
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Test Indicator Manufacturer Ranking
*Including some distributors, etc.Ranking as of March 2023 in United States of America
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Starrett | 20% |
| 2 | Mahr GmbH | 20% |
| 3 | Noga Engineering & Technology Ltd. | 10% |
| 4 | Verdict Gauge Limited | 10% |
| 5 | Mitutoyo America Corporation | 10% |
| 6 | Gem Instrument Co. | 10% |
| 7 | Mod-Tronic Instruments Limited | 10% |
| 8 | Air Logic | 10% |
Ranking as of March 2023 Globally
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Starrett | 20% |
| 2 | Mahr GmbH | 20% |
| 3 | Noga Engineering & Technology Ltd. | 10% |
| 4 | Verdict Gauge Limited | 10% |
| 5 | Mitutoyo America Corporation | 10% |
| 6 | Gem Instrument Co. | 10% |
| 7 | Mod-Tronic Instruments Limited | 10% |
| 8 | Air Logic | 10% |
Derivation Method
The ranking is calculated based on the click share within the test indicator page as of March 2023. 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
- Starrett: 1,800
Newly Established Company
- Noga Engineering & Technology Ltd.: 1980 (43 years ago)
- Mitutoyo America Corporation: 1963 (60 years ago)
- Verdict Gauge Limited: 1938 (85 years ago)
Company with a History
- Mahr GmbH: 1861 (162 years ago)
- Starrett: 1880 (143 years ago)
- Verdict Gauge Limited: 1938 (85 years ago)
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