Gauges

Thread Gauging System	Plain Gauging System	Test bars
Gauges for 6%(Luer) Taper on Medical Equipment	Anaesthetic and respiratory equipment	Grind Gauges

Most of industrial products are completed through assembling many individual parts. In order for a machine to function properly and smoothly and have endurance, each part needs to be finished with predetermined dimensions. Gauges are what are used to inspect the final dimensions and have the feature that anyone can easily, promptly and accurately conduct inspections with them. Gauges go back a long way to their birth around 1860. ISSOKU has been manufacturing gauges since being established and have greatly contributed to the improvement of Japanese Industrial Standards(JIS). There is a large variety of work to be measured with gauges, especially screw products are very common and most of them are delivered to industrial sites after being inspected with gauges.

Thread Gauging System

Limit gauges for parallel screw threads

In the thread gauges system, the limit type is most common. Thread of workpiece is ensured by controlling the GO and NOT GO limit. The types of limit thread gauges systems are broadly divided into ISO class and conventional class 1,2,3. Differences listed below
1. GO and NOT GO of the ISO gauge system is made with same dimentions for both inspection and working.
2. Pass/Fail assessment of a NOT GO gauge for the ISO class gauge system has been set as not be screwed in more than two revolutions. For class 1,2,3 gauge system it is not to be screwed in more than two revolutions, included two revolutions.
3. For the ISO class gauge system, the thread gauge for check fitting of the thread ring gauge is the GO and NOT GO limit type.

PDF Catalogue（765kb）

Standard thread gauges

A standard thread gauge is comprised of a precisely connected pair of thread ring gauges and thread plug gauges. Unlike the limit system gauge, it is an accurately manufactured gauge to fit into the threads basic angle so it passes when the thread ring gauge and the thread plug gauge go through the thread of workpiece. Use the limit thread gauge when precise fitting of the product is needed.

PDF Catalogue（765kb）

Gauges for taper pipe threads R

Taper thread gauge are used for inspection of R(Rc,Rp) defined in JIS B 0253. Thread of workpieces R and PT are similar in dimensions but the gauging systems are different. It passes if the pipe or the end of the pipefittings is within the range of the length of the notch of the gauge.
Major Differences listed below
1. For the R thread gauge, the thread ring gauge and thread plug gauge are independent and for the thread ring gauge, the cpg (CP) is used.
2. For R thread gauge, the wear limit is specifild.

PDF Catalogue（564kb）

American standard taper pipe threads for general use

Gauge for taper pipe thread gauge by American Standard (ANSI) ( Cautionnumber and angle of thread ridge are different from R threads of JIS B 0253) Features a three segmented notch ( MAX,BASIC,MIN), and passes when between MAX and MIN as shown in the diagram.

PDF Catalogue（686kb）

Dryseal American Standard taper pipe threads (L1.L2.L3)

Although similar to the NPT, the taper pipe thread gauge by American Standard (ANSI) differs from the NPT thread gauge by having a two-segmented notch, and passes if it is between MAX and MIN. The typical gauge is L1 others are L2 and L3.

PDF Catalogue（686kb）

Gauges for special applications

● Thread gauge for perpendicularity
● Thread gauge for concentricity
● Adjustable thread ring gauge
● Thread gauge for deep holes and thread length
● Gauge handle with depth measurement
● Gauge handle with colored ring

PDF Catalogue①（384kb）
　　　Catalogue②（105kb）
　　　Catalogue③（500kb）

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Plain Gauging System

Limit gauges for holes
(Limit gauges for holes of cemented carbide)

Limit gauges for holes which has gauging surfaces based on least material limit and maximum material limit of hole. The gauge part material is carbide, which has excellent wear resistance compared with the standard gauge material SKS(steel alloy). The shape is in conformance with standard products; please keep this in under consideration.

PDF Catalogue（1.1MB）

Limit gauges for shafts
(Limit gauges for shafts of cemented carbide)

Ring gauges are used mostly for comparatively small dimensional materials. Gap gauges are for heavy weight and hard to handle materials. The shape is graduated on one side as GO and NOT GO, so it does not need to be flipped over, reducing inspection time. The gauge part material is carbide, which has excellent wear resistance compared with the standard gauge material SKS (steel alloy). The shape is in conformance with standard products; please keep this in under consideration.

PDF Catalogue（904kb）

Master gauges
(Master gauges of cemented carbide)

Master gauges are used for setting-up of relative measuring instruments, as dimensional standards. ISSOKU makes original Master Ring gauges for air micrometers, which are thicker than standard master ring.. Please refer to Master Gauges for air micrometers in the catalog.. The gauge part material is carbide, which has excellent wear resistance compared with the standard gauge material SKS (steel alloy). The shape is in conformance with standard products; please keep this in under consideration.

PDF Catalogue（444kb）

Taper gauges

Taper gauges are used to inspect gauge taper and the taper’s standard diameter (the diameter at the large or small end). Generally comprised of a taper plug gauge and a taper ring gauge, the connected pair forms a standard gauge. However, this gauge can also be manufactured with a notch in order to identify this product’s standard stopping position on the end face. (see diagram).

PDF Catalogue（1.25MB）

Other gauges

● Height plate gauge
● Depth plate gauge
● Feeler plate gauge (Key way plate gauge)
● Spline gauge

PDF Catalogue（424kb）

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Test bars

Test bars

It is used for static precision testing of tooling machines, measuring devices, etc, for parallelism, roundness, and run out of rotary shaft.

PDF Catalogue（296kb）

Gauges for 6%(Luer) Taper on Medical Equipment

Gauges for 6%(Luer) Taper on Medical Equipment

internationally,which has two kinds of male luer and female lier. Gauge based on ISO594-1 is used to check 6%(luer) taperd portion.Gauge based on ISO594-2 is used to check leakage,separating force, trip torque, easy assembly, resistance running around or stress cracking test specifled into this standard.

PDF Catalogue（960kb）

Anaesthetic and respiratory equipment

Anaesthetic and respiratory equipment Gauge for Connectors Cones and Sockets

Interchangeability of connecting parts of masks connectors and tubing are needed to assure proper assemble of anaesthetic and breathing system.Gauges for testing these connection are used for manufacturing and inspection of equipment and incoming inspection at medical institutions.

PDF Catalogue（1974kb）

Grind Gauges

Grind Gauges

■Use　 Grrind Gauges is used to measure grain sizes of power materials like paine,ink,cosmetics,foods,drug,plastic,cement or ceramic and to assess its granularity(uniform dispersion/kneading condition). ■How to use At first,to drop the ink onto groove of gauge adn pull the scraper this side applying it to gauge vertically.Next,to observe adn assess the pattern shaped by grains of powder meterials.(see the picture right hand) ■Asessment method ・Asessment by Lines method To read scale at the position where beyond three lines of over 10mm width appear consecutively side by side.To repeat this way in three times generally.The mean value in three times shall be applied in this measurement. ・Assessment by Distribution map method To lay the gauge and observe from position at 20～30°oblique above.Next,to read scale at the position where grains start to be in tight formation.

PDF Catalogue（857kb）