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Rubert 521 | Precision Reference Specimen | Type B, Sawtooth wave, Ra = 0.4 µm (15 µin)

Part Number : 521E

With RSm = 15 µm, Pt = 1.6 µm and Ra = 0.4 µm (15 µin), the Rubert 521 is a sawtooth wave precision reference specimen classed as ISO 5436-1 type B. Laboratories use it for checking and calibrating surface measuring instruments. It is offered in two versions: 521E, with a hard nickel-boron top layer, and 521X, without a top layer.

Key features

  • ISO 5436-1 type B, sawtooth wave profile
  • RSm = 15 µm, Pt = 1.6 µm; Ra = 0.4 µm (15 µin)
  • Electroformed nickel; 521E with hard nickel-boron top layer or 521X without
  • UKAS calibration available on request from Rubert's accredited laboratory
Availability: in stock
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