Ernst calibrated pins and certified calibrated pins

Calibrated pins are used for Brinell hardness tests
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Ernst calibrated pins are used in portable hardness testers STE/A and STE/B to procude an impression based on Brinell principle. They are a simple, effective and cheap method implemented more than 50 years ago.
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The package contains 250 calibrated pins and it is also equipped with a table for reading the value in Brinell scale.
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There are two typologies of pins: G-type and F-type.
The alternation between type G and type F pins is due to the variability of raw materials and our desire to always provide the highest accuracy in the results reading, which depends on mechanical properties of raw material production lot. The only difference in the use of G-type and F-type pins is the use of the relevant conversion table.
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