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This section provides an overview for inside diameter gauges as well as their applications and principles. Also, please take a look at the list of 17 inside diameter gauge manufacturers and their company rankings. Here are the top-ranked inside diameter gauge companies as of December, 2024: 1.MTG, Inc., 2.Douglas Machine & Engineering Co., Inc., 3.Marposs.
Table of Contents
An inside diameter gauge is a versatile device used for measuring the internal diameter of a cylinder or hole.
Many products feature holes for mounting or tubes for wiring. Inside diameter gauges are employed to accurately measure their size and dimensions. While devices like calipers and micrometers can measure inside diameters, a tool specifically designed for this purpose is referred to as a "hole test."
An accurate reading can be obtained by adjusting the thickness with a dial and matching it to the inside diameter. Measurements can be made with precision down to several micrometers. There are two types available: an "analog type" that visually displays the value and a "digital type" that calculates the value automatically.
Inside diameter gauges find applications in a wide range of situations, particularly in measuring the inside diameter of products manufactured or processed in factories. The manufacturing process often requires holes of various sizes for connecting parts and routing wiring.
Accurate measurements are crucial because even slight variations in hole sizes can lead to connection problems, malfunctions, or defects. Hole tests excel at providing precise measurements with an accuracy of a few micrometers, making them suitable for rapid measurement of hole and tube inside diameters. They are also valuable for accurately measuring threaded holes to ensure strong connections and enhance safety.
Numerous devices are available for measuring inside diameters. We will explain the structure and features of the Hole Test as an example.
The Hole Test is an instrument used to measure inside diameter by inserting it into a hole and employing two or three measuring elements. As the dial is turned, the measuring elements gradually expand and stop when they contact the inside of the hole. By measuring this position, the inside diameter can be determined. The advantages of the Hole Test include:
However, there are also disadvantages, such as:
The Hole Test is a sensitive device with a higher price point. It requires calibration before measurement, which can be time-consuming. Furthermore, it has limitations on the types and sizes of holes it can measure, often necessitating the use of multiple Hole Tests depending on the application.
Inside diameter gauges can be broadly classified into three types: Hole Test / Borematic, Inside Micrometer, and Cylinder Gauge.
The Hole Test / Borematic, also known as an inside micrometer or 3-point micrometer, measures the inside diameter by contacting it at three points. For smaller bores (6 mm or less), a two-point contact is used due to structural limitations. Some digital models of borematics are referred to as ABS borematics, as they do not require origin adjustment each time the power is turned on.
An inside micrometer measures the inside diameter by touching both ends of the diameter. It measures only the length of the diameter. By adding rods, it is possible to measure larger bore diameters. However, since two points are in contact, care must be taken to prevent measuring point misalignment, especially in deep bores. Measurement must be perpendicular to the bore's center axis.
Similar to the inside micrometer, the cylinder gauge measures at two points. It is suitable for measuring small holes where the main body of the instrument cannot enter the hole. Only the measuring element enters the hole, and the dial and other parts displaying the measured value can be read outside the hole. These inside diameter gauges are ideal for measuring small and deep holes.
*Including some distributors, etc.
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Gagemaker is a manufacturer of industrial-grade measurement devices and inspection equipment that was established in Pasadena, Texas, USA, in 1979. The company primarily produces taper gages, thread height gages, and lead gages for large-diameter measurement or API thread inspection. It also offers indicators, cases, and calibration equipment for its portfolio products. The company is ISO 9001-certified, and provides custom design, part measurement, and inspection services to its clients. It chiefly serves the oil and gas, mining, and machine shop industries.
MTG, Inc., founded in 1967 and located in Carson City, Nevada, is a manufacturer of internal & external gaging. The company's diverse range of products includes gages, fixtures, power screws, and measuring equipments. It's products are utilized in precision engineering and manufacturing processes to ensure accurate measurements, consistent quality, and efficient assembly of components and products. The company's products are used in industries such as aerospace, automotive, defense, and manufacturing.
Micro Quality Calibration Inc MQC) was founded in 1978 as a technology-oriented calibration, repair, testing, and first article inspection facility for precision measurement test equipment. MCQ follows in strict compliance of ISO-9000 (series 1, 2, 3, and 4) specifications. MCQ offers services in calibration, inspection testing, repair, database management, and analytics. Calibration services are often provided for automotive, electrical components, aerospace, and secure communications, for which MCQ is ISO 17025 accredited.
Douglas Machine & Engineering, established in 1998, is a manufacturer based in Davenport, Iowa, that specializes in industrial design, fabrication, machining, and installation services. The company offers comprehensive in-house fabrication, including CNC machining and welding, serving industries like manufacturing and automotive. Their product portfolio features milling, grinding, and lathe services. With ISO 9001:2015 and AS9100D certifications, the company handles every fabrication process in-house, from concept and design to build, machining, and installation.
Sunnen Products Company, founded in 1924, is an American manufacturer and supplier headquartered in St. Louis, Missouri, specializing in of high-precision and bore sizing machines, tools, and abrasives. Joe Sunnen, founder of the company, invented the first manual cylinder hone in 1928. Over the years, Sunnen has developed industrial honing machines, tools, and abrasives with bore sizing and finishing systems, lapping machines, deep hole drilling machines and tools, bore gaging and roller burnishing systems. These products find applications in various industries, such as honing solutions in the automotive sector, as well as a line of machines, tools, and abrasives for energy drilling.
Kent Gage & Tool Company, Inc. was founded in 1972 and is based in Poughkeepsie, New York, U.S.A., and is a manufacturer of precision measurement and quality control inspection equipment for various industries. The company provides large diameter gages, snap, bore gages & retractable bore gages, and specialty gages as well as mechanical gages such as micrometers, calipers, indicators, plug gages, and, ring gages that have applications in automotive, heavy-duty, small engine, marine, and, oil & gas industries.
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.
Western Gage Corporation is a manufacturer, supplier, and distributor of air and electronic gages since 1968 and is based in Camarillo, California. They produce dimensional air gages for internal and external diameters, custom gage design, precision components, and automated inspection systems as well as air gage readouts (analog and digital) and microprocessor-based instruments such as MilliCheck readouts with high-resolution LCD displays and Micro IIi Readout that have both bar graph and digital displays. These instruments incorporate USB & RS-232 serial outputs, and can handle up to four inputs. The equipment is ideal for high volume production environments ensuring precision and accuracy.
Fuji Tool Co. Ltd., established in 1933 and based in Chiba, Japan, is an ISO 9001 and ISO 14001 certified manufacturer of precision tools and jigs. The company produces measuring tools, such as radius gauges, drill point checkers, inside vernier calipers, and contour gauges. It also manufactures jigs, mini-magnetic stands, vises, clamps, and edge finders. Its products find application in the automotive and metalworking industries across various regions, including Europe, Oceania, North America, East Asia, and Southeast Asia.
DAI-ICHI Sokuhan Works Co, founded in 1944 is based in Ojiya, Japan, and is a manufacturer and supplier of machinery tool accessories. Their product portfolio includes measuring instruments, air micrometers, electronic micrometers, gauges, precision machine parts, spindle units, and kneading dispersibility measurement. The products are manufactured under superior technology and precision with quality control. The products are used in multiple industries which include aircraft, trains, automobiles, and other modes of transportation.
Tokyo Seimitsu Co. Ltd., established in 1949 and headquartered in Tokyo, Japan, is a manufacturer of semiconductor production equipment and precision measuring instruments. Its product portfolio includes optical measuring instruments, probing machines, polish grinders, X-ray CT systems, and coordinate measuring machines. In 1952, the company developed Japan’s first high-pressure flow-type air micrometer, and in 1958, it created the world’s first germanium pellet automatic thickness sorting machine. It also developed Japan’s first coordinate measuring machine in 1969, followed by Japan’s first wafer-dicing machine in 1970. The company is the industry’s only semiconductor equipment manufacturer with measurement technology.
Blum-Novotest, Inc. was founded in 1968 and is based in Grünkraut, Germany, and is a manufacturer of high-precision measuring and testing technology systems for various industries. The company manufactures products in three divisions namely measuring components, measuring machines, and, test engineering solutions, and provides 3D touch probes, surface roughness and bore gauges, receivers, measurement software, and, partner products for medical technology, machine tools, automotive, watches & jewelry, and, aerospace sectors as well as presented a new laser measuring system called LC53-DIGILOG for tool measurement and monitoring in CNC machining centers.
TECO tube expanders company was established in 1968 and is based in Rietschans, Netherlands, is a manufacturer of tube expanders, cleaners, and associated accessories for various industrial and commercial applications. The company has ISO-9001 certifications and provides special tube expanders, air-driven roll motors, auto tube expanding units, control unit& electric roll motors, and, tube testing & installation tools as well as tube removal tools, tube pulling equipment, pipe cutting machines, flange-facing machines, and, pipe bevelling & clamping devices for the heat transfer, industrial machinery manufacturing, material handling, and, construction sectors.
Marposs S.p.A. is headquartered in Bentivoglio, Italy. The company serves industries such asa aerospace, semiconductors, machine tooling, and biomedical as a manufacturer and as a service provider. The company’s products vary by industry but include tools for gauging, profiling, and monitoring, as well as data management systems and machines for testing and automation. The company’s services include after sales service, customer training, original spare parts, retrofit and upgrade of existing machinery, and project management consulting services.
Torus Technology Group was founded in 1999 and is based in Telford, UK, and is a manufacturer of automated precision measurement and testing equipment for various industries. The company has ISO 9001:2008, ISO 10360, and, UKAS standards certifications and provides machining, assembly, fabrication, on-site design, and, 3D printing services as well as inspection systems, measurement equipment, and, metrology equipment for medical, aerospace, packaging, material handling, and, machinery manufacturing industries. The company also offers laser scanning, reverse engineering, CMM & portable arm re-verification, programming fixturing,and, design & manufacturing services.
RIFTEK LLC, a company established in 1993, based in Minsk, Belarus, is a manufacturer and supplier of optoelectronic instruments for measuring geometrical quantities. The company provides various products such as laser triangulation sensors, 2D and 3D laser scanners, absolute linear encoders, optical micrometers, and specialized systems for measuring dimensions, displacements, thickness, and diameter. These products are used for various applications such as power generation, distribution, industrial automation, railway transport, machine vision, and others. The company also offers engineering, installation, testing, and maintenance services for its customers.
MSI-Viking Gage, LLC was founded over 50 years ago and is headquartered in Duncan, South Carolina. MSI-Viking provides manufacturing support to the automotive, aerospace, metals, plastics, medical, energy, food & beverage, and machining industries. MSI-Viking product offerings include 3D scanning systems, 3D additive manufacturing, air gages, bore & hole gages, calipers, CMMs, computed tomography, data collection, depth gages, fixture systems, indicators, laboratory equipment, vision systems, and thread gages among others. Services include calibration, metrology, repair, embedded services, training, and metrology pre-op services.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Marposs |
10.9%
|
| 2 | MTG, Inc. |
9.1%
|
| 3 | Douglas Machine & Engineering Co., Inc. |
8.5%
|
| 4 | Blum-Novotest, Inc. |
6.7%
|
| 5 | TECO tube expanders company |
6.7%
|
| 6 | MSI-Viking Gage, LLC |
6.1%
|
| 7 | Mitutoyo America Corporation |
6.1%
|
| 8 | Western Gage Corp. |
6.1%
|
| 9 | Sunnen Products Company |
5.5%
|
| 10 | Gagemaker |
4.8%
|
Derivation Method
The ranking is calculated based on the click share within the inside diameter gauge page as of December 2024. 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 (%) |
|---|---|---|
|
United States of America
|
8 | 50.0% |
|
Japan
|
3 | 18.8% |
|
Germany
|
1 | 6.3% |
|
Netherlands
|
1 | 6.3% |
|
Italy
|
1 | 6.3% |
|
United Kingdom
|
1 | 6.3% |
| Belarus | 1 | 6.3% |
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