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The aim of this unit is to test whether the outside diameter of the tested sample is within standard or not.

- Judgment of reference: the samples must adapt to the larger hole, while the samples must not adapt to the small hole.

- It can be custom-made as different diameters in numbers of holes.

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<span style="font-size:10.0pt;font-family:" color:black;"="">


The aim of this unit is to test whether the outside diameter of the tested sample is within standard or not.

- Judgment of reference: the samples must adapt to the larger hole, while the samples must not adapt to the small hole.

- It can be custom-made as different diameters in numbers of holes.