Shaft diameter: ø6.35mm
Calibration details: This Knoop Indenter complies with the requirements of DIN EN ISO 4545-2 and ASTM E92 Class B calibrated to standards by an ISO 17025 RvA accredited laboratory, with calibers traceable to Physikalisch-Technische Bundesanstalt National Metrology Institute, (PTB) Braunschweig, Germany.
RvA, UKAS DaKKS, COFRAC are ILAC signatories.
Calibration temp.: (23 ± 2) °C
Relative humidity: < 70 %rh
Lowest test force: 1 gf
Validity: ISO 4545-2 recommends that the Knoop Diamond Indenter be directly verified after 2 years of use.