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Pin gauge / Plug gauge is used to check holes or features to an exact diameter, in some cases up to 3 decimal places. It has a machined cylindrical body so the diameter is very specific. Each pin gauge has a fixed length of 50mm. One difference to make is that a ruler should only be used to accurately measure diameter, not length.
Pin gauge EISEN EP series Used to check hole diameter
The pin gauge can be used separately to measure or check hole diameters, or used in tandem with the pin gauge handle to create a go/no go gauge.
If d1d2's pin gauge has a diameter that fits the hole the goods are inserted into, hole location (h1h2) is required. 
if measuring H1H2.
Place the pin gauge in the tooth groove of the gear, going in and out along the tooth groove of the pin gauge in the indicator for all tooth grooves. It attaches, measures and obtains the tooth groove deflection.
angle is more demanded by
sinusoidal bar with pin gauge of diameter d.
The required cone angle is equal to 
how to measure h.
If you insert a ruler d1d2 d3 with a diameter that fits the cargo hole and measure L1L2, 
measure the step ( ), the step aa of the hole is required by 
The effective diameter E is required by E=M-3d+0.866025p.
(However, for metric screws and uniform screws.)
In most cases, the actual diameter will be the smaller 'go' gauge and the 'no go' gauge will be slightly larger than the 'go' gauge. Pin gauges are also available in sets for testing holes of various sizes.
What types of gauge pins are there?
As standard, the pin gauge is made from hard alloy steel (hardened to HRc62-65). These pin gauges can be made to any size with an accuracy of up to 3 decimal places from as small as 0.2 mm to 30 mm. Hardened steel pin gauges conform to grade 1 standards, making them ideal for both workshop and inspection grade applications.
Besides steel gauge pin, SEMIKI also has a product line gauge pin made of ceramic material (ceramic) is also available. Ceramic gauge pins have the advantage of being extremely resistant to abrasion, corrosion, and have outstanding dimensional stability. Ceramic foot gauges are also used where steel gauges cannot be used (such as in the food manufacturing, medical and aerospace industries) due to the metal's electrical conductivity. However, ceramic foot gauges can only be made with accuracy to 2 decimal places. In most common applications, an alloy steel pin gauge will suffice and the additional cost of a ceramic pin gauge will not be necessary.
What is a Plug gauge?
A ring gauge is a circular hole measuring tool with high accuracy and high hardness to prevent wear when working.
Application for inspection in mechanical processing, especially mass production of large output.
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Thread Plug gauge Sokuhansha Check ISO and Jig standard hole threads.
To choose the exact parameters of the hole gauge (pin gauge/plug gauge), please contact us:
SEMIKI MEASUREMENT EQUIPMENT COMPANY LIMITED
www.semiki.com
Phone: +84 28 2253 3522
Request a quote: sales@semiki.com