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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. |
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. |
Limit thread gauge of gauging system for ISO class
Limit thread gauge of gauging system for class 1,2,3
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Threads of workpieces and types of gauges (EX. Metric screw threads)
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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. |
Standard thread gauges
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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. |
Gauges for taper pipe threads R
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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. |
American standard taper pipe threads for general use
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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.
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Dryseal American Standard taper pipe threads(L1.L2.L3)
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Gauges for special applications
Thread gauge for perpendicularity Thread gauge for concentricity Thread gauge for deep holes and thread length Thread gauge for depth can indicate the depth by the graduation or groove in the neck. Adjustable thread ring gauge
Gauge handle with depth measurement   NEW Gauge handle with colored ring   NEW |
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Other materials referred to Thread Gauging System
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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. |
Limit gauges for holes
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Limit gauges for shafts(Limit gauges for shafts of cemented carbide)
Ring gauges are used mostly for comparatively small dimensional materials. |
Limit gauges for shafts
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Master gauges(Master gauges of cemented carbide)
Master gauges are used for setting-up of relative measuring instruments, as dimensional standards. |
Master gauges
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Taper gauges
Taper gauges are used to inspect gauge taper and the taper’s standard diameter (the diameter at the large or small end). |
Taper gauges
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Other gauges
Height plate gaugeDepth plate gauge Feeler plate gauge(Key way plate gauge) Spline gauge |
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Other materials referred to Plain Gauging System
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Test bars
It is used for static precision testing of tooling machines, measuring devices, etc, for parallelism, roundness, and run out of rotary shaft. |
Test bars
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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. |
Gauges for 6%(Luer) Taper
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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. |
Gauge for Connectors Cones and Sockets
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