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ISSOKU (THAILAND) CO., LTD.
Sales of gauges, measuring instruments and ball screws.

Measuring Instruments


Measuring Machine for Small Internal Diameter

Precision Indexing Devices

Precision Rotary Table

Jigs for Precision Measurement

Outside Diameter Reference Gauge System(Runout gauge)

Valve Seat Face Runout Checker

Automatic Measuring Machine

Vertical Form Checker

Coordinate Measuring Machine

There are various approaches to measuring instruments according to objectives and purpose. We, ISSOKU, always return to the basis of measurement and only begin development after considering how we can measure with higher precision according to each case. As a result, we have accumulated experience and ideas in many fields of measurement and have created various innovations that have resulted in higher accuracy. Consistently pursuing high precision measurement produced the absolute measuring device “Measuring Machine for Small Internal Diameter” through a noncontact optical system and it led to the development of the monitor image measurement system by adopting the CCD camera system and EX(EXPERT) system which realized positioning simplification with computer processing in the development series. In the angle measurement field shoes standardization will be promoted in the future, we developed the “super precision indexing device(SPID)” whose indexing precision of 0.2 seconds we can be proud and as a prototype of an angle-measuring device is highly evaluated by related industries. Furthermore, the measuring instruments of ISSOKU including jigs that very precisely measure automobile parts and automatic measuring instruments that accurately measure and sort mass production parts contribute to every industry. The original ideas of ISSOKU and the continuous pursuit of quality are present in all our measurement instruments.

Measuring Machine for Small Internal Diameter

IDM is traceable to the standard of length


IDM is the best Standard Measuring Machine of Internal Diameter of φ0.1mm to φ100mm. Measuring Machine for Small Internal Diameter IDM(Optical)  IDM is not instrument which measure surface by microscope. IDM is an instrument which measures the distance between one wall to the other wall of a workpiece by the optical principles. IDM can measure the diameter of thru-holes fromφ0.1mm to φ100mm without master gage, and easily in the following procedure. The prominent feature is that measurement is took between bore walls at any height desired. IDM optically detects a wall on one side of the work at the first, and the display counter is set to zero in this position. Next, the opposite wall is optically detected. this distance is not other than moving quantity of the work which is read on the digital scale. IDM can be applied to many other measurements such as slit widths, outside diameters, wall perpendicularity and bore pitches, not only bore. There is no mechanical measuring force to the work during measurement, so that IDM can be used for soft material and thin wall works.

 PDF Catalogue(1.2MB)

Precision Indexing Devices

High level precision angle indexing devices


This indexing device indexes by means of 720 top and bottom, fully coupled serrations. After each individual serration is precisely ground, they are lapped until they make full contact. Therefore, accurate indexing is possible because each individual top and bottom serration coupled accurately and uniformly. Moreover, deterioration of precision indexing is difficult, and precision is maintained for a long time. Furthermore, SPID-720 is manual, and SPID-720A is motor-operated.

 PDF Catalogue(570kb)

Precision Rotary Table

High run out precision.


Super Precision Rotary Table SPRT series is a continuous rotary table developed mainly for grinding(but cannot index). By combined use of the tool grinding machine and the grinding center, it is possible to finish the cylinder, end face, and hole etc. with high precision. Moreover, it can be used as an inspection tool for testing run out.

 PDF Catalogue(879kb)

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Jigs for Precision Measurement

ISSOKU designs and produces small gaging tools, special gauges and multifunction gauges.

 PDF Catalogue(721kb)

Outside Diameter Reference Gauge System(Runout gauge)

This gauges measure runout and concentricity of inside and outside diameter. Just put a work piece on main rollers and read indication of dial gauge while turning handle.

 PDF Catalogue(548kb)

Valve Seat Face Runout Checker

Our original Reference Bar mechanism is incorporated, it is easy to measure runout of seat surface of engine cylinder head with valve guide hole as datum.

 PDF Catalogue(558kb)

Automatic Measuring Machine

ISSOKU offers Automatic Measuring Machines with unique technology. This includes “Air Micrometers” , ”Electronic Micrometers” , “Precision Products” and advanced application of “Image Processing” and “Laser Systems”.

 PDF Catalogue(681kb)

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Vertical Form Checker

Equipped with ISSOKU precision lead screw and high accurate straight template achieve self-correct movement for reliable measurements.The outer periphery of the R and steps of Pisutonringu, including the measurement of the shape of the slope,can be utilized in many shape measurement.

 PDF Catalogue(859kb)

Coordinate Measuring Machine

Centers of inscribed circle of multiple holes can be positioned by our original Reference Bars (centering jig).Not only pitch between 2 holes also relative position of 3 or more holes can be measured.

 PDF Catalogue(6.4MB)

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Latest Update 20 Mar 2023
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