All Categories
History
This section provides an overview for outer diameter measuring instruments as well as their applications and principles. Also, please take a look at the list of 11 outer diameter measuring instrument manufacturers and their company rankings. Here are the top-ranked outer diameter measuring instrument companies as of January, 2025: 1.Obishi Keiki Seisakusho, 2.Pratt & Whitney Measurement Systems, Inc., 3.CITIZEN FINEDEVICE CO.,LTD..
Table of Contents
Displacement sensors, which are instruments for measuring displacement (change in the position of an object), include non-contact methods, and displacement gauges that use light silhouettes for measurement are often used for dimensional and outer diameter measuring applications, and are therefore called dimensional measuring instruments, or outer diameter measuring instruments.
Many outer diameter measuring instruments use a semiconductor laser (green LED beam), which is compact and non-contact, and can measure with high accuracy without affecting the object to be measured.
Outer diameter measuring instruments are used by manufacturers in the steel and metal industry and textile material manufacturers to inspect the appearance of materials and identify different materials in the product development and manufacturing process.
Specifically, they continuously measure the outside diameters of materials to be inspected and identified in real time and with high non-contact accuracy at mass production sites and inspection rooms.
Some outer diameter measuring instruments can be used for both automatic inspection (in-line inspection, where the visual inspection process is incorporated into the line production system) and manual inspection (off-line inspection, where measurement is performed in a separate process from the line).
In an outer diameter measuring instrument, a semiconductor laser (green LED light) is emitted in parallel from the light projector. When an object passes through a certain measuring range, the object blocks some of the light and a silhouette is obtained.
By specifying a measurement point on the silhouette, the measured value at an arbitrary point is obtained.
The silhouette measurement is captured by an image sensor in the light-receiving section.
The image sensor may use a device called a CMOS (complementary metal oxide semiconductor), which is an imaging device used in digital cameras.
The light and dark edges are detected from this silhouette and the O.D. dimension is measured.
In the measurement principle described above, the measurement method is called the transmission type, which is not affected by illumination or the surface condition of the object, and outer diameter measuring instruments take advantage of this advantage to achieve highly accurate measurements.
As explained in the overview, the outer diameter measuring instrument is a type of displacement sensor that uses laser light for non-contact and stable measurement, so it can simultaneously measure the gap dimension and the amount of movement (the amount by which an object moves from one position to another).
*Including some distributors, etc.
Sort by Features
Sort by Area
Pratt & Whitney Measurement Systems, Inc. is a manufacturer of ultra-precision metrology products and solutions. Established in 1860, the company is headquartered in Bloomfield, Connecticut, USA. Its main activities revolve around designing, and manufacturing advanced metrology solutions, including Universal (ID/OD) Measuring Instruments and Long Length Universal (ID/OD) Measuring Instruments. The company offers a range of high-precision products, such as gages, calipers, and micrometers, catering to industries like aerospace, automotive, and manufacturing. Pratt & Whitney Measurement Systems provides comprehensive calibration and certification services, ensuring accurate measurements. The company serves applications like dimensional inspection, quality control, and process optimization, supporting various industries.
CITIZEN FINEDEVICE CO., LTD. is a Japanese manufacturer headquartered in Fujiyoshida, Yamanashi. It was established in 1959 through the merger of three Japanese companies: Citizen Miyota Co., Ltd., Citizen Finetech Co., Ltd., and Citizen Seimitsu Co., Ltd. The company specializes in precise metal parts for automobiles and other products, including quartz oscillators and ceramic components. Production processes are supported by various technologies, such as precise metal part machining, thin-film technology, and sealing technology, catering to different applications. Since 2019, CITIZEN FINEDEVICE, along with its holding company CITIZEN Group, has actively implemented Responsible Minerals Procurement Policy and Environmental Policy.
Obishi Keiki Seisakusho, established in 1949 in Osaka, Japan, is a manufacturer of precision test and measurement equipment. The company specializes in manufacturing automatic measuring equipment, ultra-precision masters, precision spirit levels, surface plates, angle plates, and deflection testers. These efficient equipment are used in multiple industries such as automotive, electronics, aerospace, and research and development for the purpose of precise measurements, quality control, and testing the performance of the products. The precision equipment is made of granite and ceramics, ensuring efficient handling and performance in harsh environments such as heat.
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.
RobotDigg is a Chinese manufacturer of linearized and motorized systems that was established in 2011 in Hong Kong. The company produces various parts and systems for use in robotic automation, including surface mount technology (SMT), laser marking, and glue dispensing machines, as well as stepper, BLDC and servo motors. It also offers related products and parts, such as 6 DOF robot arms, grippers, and controllers. RobotDigg products are used in factory automation, mass manufacturing, and packaging operations, as well as by clients such as Jugetek, QiHe, and Charmhigh.
Zhengzhou Mercury-Tech Co., Ltd., established in 2001 and based in Zhengzhou, China, is a manufacturer and supplier of laser diameter measurement gauges. The company's product range includes laser diameter gauges, pipe diameter gauges, length measurement gauges, diameter measuring gauges, and filament diameter measurements. These products are used for measurement tasks in various sectors. They primarily serve the wire and cable, glass, metal pipes, and plastic pipes industries. The company offers services such as OEM service, design service, and buyer label options.
Kasuga Kohki Co., Ltd., established in 1961 and based in Nagoya, Aichi, Japan, is a manufacturer and supplier of cutting tools and related equipment. The company's product range includes cutting tools, diamond tools, machine tools, equipment for machine tools, and measuring equipment. These products are designed for operations such as cutting, grinding, measuring, and machining. They primarily serve industries such as manufacturing, machinery, diamond processing, and environmental sectors. Besides, the company offers services such as tool selection consultation, regrinding & coating, and equipment maintenance.
Zhongshan Enrun Co Ltd, established in 2007 and based in Zhongshan City, China, is a manufacturer and supplier of general automation equipment, and spare parts. The company's product range includes a Diameter Monitor / Measurement, Laser Gauge, Frequency Spark Tester, DC Spark Tester, and Induction preheater. These products are primarily used in cable production, ensuring quality and efficiency. They serve industries related to cable manufacturing, automation, and electrical engineering. The company provides services such as cable industry solutions, automation equipment supply, technical consultancy, and comprehensive customer support.
DIY Trade, established in 1999 and based in Mainland China, is a distributor and supplier of various products spanning multiple sectors. The company's product range includes agriculture & foods, apparel & fashion, arts and crafts, chemicals, and computers & AV digital. These products are used for trade, commerce, and consumer needs. They primarily serve industries such as agriculture, fashion, chemicals, and technology. Additionally, the company offers services like member service, DIY website creation, product promotion, and sharing successful trade stories.
Ranking as of January 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Obishi Keiki Seisakusho |
26.9%
|
| 2 | Pratt & Whitney Measurement Systems, Inc. |
15.4%
|
| 3 | CITIZEN FINEDEVICE CO.,LTD. |
15.4%
|
| 4 | Zhongshan Enrun Co Ltd |
11.5%
|
| 5 | Zhengzhou Mercury-Tech Co., Ltd. |
7.7%
|
| 6 | Kasuga Kohki Co.,Ltd. |
7.7%
|
| 7 | RobotDigg |
7.7%
|
| 8 | DIY Trade |
3.8%
|
| 9 | TOKYO SEIMITSU CO., LTD. |
3.8%
|
Derivation Method
The ranking is calculated based on the click share within the outer diameter measuring instrument 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
|
5 | 50.0% |
|
China
|
3 | 30.0% |
|
United States of America
|
1 | 10.0% |
Taiwan
|
1 | 10.0% |
56 products found
56 products
Tokyo Optoelectronic Industry Co., Ltd.
730+ people viewing
Last viewed: 3 hours ago
■Features ・Instantly measure outer diameter and gap without contact using laser light ・Equipped with simultaneous display of two types of measure...
8 models listed
Tokyo Optoelectronic Industry Co., Ltd.
170+ people viewing
Last viewed: 6 hours ago
■Summary ・For measuring the outer diameter of end mills and drills ・High precision measurement with reproducibility within ±2μm ・Supports even n...
2 models listed
20+ people viewing
Last viewed: 16 hours ago
■Summary A 3D camera is used to photograph the "small end" of a log and quickly measure the diameter. Since the diameter class of a log is determin...
Tokyo Optoelectronic Industry Co., Ltd.
230+ people viewing
Last viewed: 5 hours ago
If you memorize the measurement items (outer diameter, runout, roundness, straightness, crown shape, etc.), measurement points, and type of created...
4 models listed
Hakusan System Co., Ltd.
70+ people viewing
Last viewed: 4 hours ago
■Features This is a measuring device that measures the diameter of large cylindrical objects such as train axles. Since the sensor part is portable...
Tokyo Optoelectronic Industry Co., Ltd.
200+ people viewing
Last viewed: 21 hours ago
This device has an LMG attached to a manual feed measuring table and comes in vertical type (RMVT series) and horizontal type (RMH series). The rol...
2 models listed
Tokyo Optoelectronic Industry Co., Ltd.
120+ people viewing
Last viewed: 5 hours ago
Achieved low cost as a dedicated runout measurement device. This is a device that uses 3 or 5 laser micro gauges (LMG) to measure runout at multipl...
2 models listed
Tokyo Optoelectronic Industry Co., Ltd.
110+ people viewing
Last viewed: 1 day ago
This is a model with a measuring jig that allows you to measure small diameter rollers, pipes, and shafts on a desktop. Laser micro gauge (LMG) ena...
CITIZEN FINEDEVICE CO.,LTD.
90+ people viewing
Last viewed: 5 hours ago
■Outer diameter/inner diameter Lineup of horizontal stands that can measure the outer and inner diameters of products ■Extreme By installing the S...
FK System Co., Ltd.
70+ people viewing
Last viewed: 45 minutes ago
Very Fast Response
■Solution This is a list of solutions provided by FK System. We provide POS systems, food ticket vending machines, entry/exit systems, authenticati...
FK System Co., Ltd.
70+ people viewing
Last viewed: 1 day ago
Very Fast Response
■Solution This is a list of solutions provided by FK System. We provide POS systems, food ticket vending machines, entry/exit systems, authenticati...
DAI-ICHI SOKUHAN WORKS CO.
40+ people viewing
Last viewed: 1 day ago
Standard Response
■Features Two types have been standardized: the pinch type, which allows highly accurate outer diameter measurements by simply holding the object t...
DAI-ICHI SOKUHAN WORKS CO.
50+ people viewing
Last viewed: 18 hours ago
Standard Response
Simultaneous measurement head for inner and outer diameters ■Measurement use Various rotor shafts Inner diameter concentricity measuring head ■Mea...
Matsumoto Machine Industry Co., Ltd.
50+ people viewing
Last viewed: 14 hours ago
Simply place the workpiece on a robot or gantry loader and the inner and outer diameters will be automatically measured. The system is packaged and...
Fujitoku Co., Ltd.
170+ people viewing
Last viewed: 6 hours ago
■Summary A laser profile measuring machine (non-contact) is a measuring device that uses high-speed scanning laser beams to accurately measure dime...
Nano Precision Co., Ltd.
470+ people viewing
Last viewed: 1 day ago
■ Characteristics -The measuring is a 4 mm diameter long shaft, but it must be guaranteed a tolerance range of 3.987 --3.992mm. ･ While the shaft p...
Nano Precision Co., Ltd.
230+ people viewing
Last viewed: 1 day ago
The shaft of the blower motor used for in -vehicle air conditioners and battery cooling is guaranteed a 6 -micron outer diameter tolerance. It is a...
Nano Precision Co., Ltd.
160+ people viewing
Last viewed: 1 day ago
This product must be guaranteed an outer diameter of 3.175–3.180mm (a tolerance range of 5 microns). While sliding the shaft that falls from the c...
