up to 100 mm > grades K, 0, 1 and 2 single gauge blocks sets, standard as well as individual compositions custom-made lengths available from a minimum number of pieces resistant to corrosion wear resistance about four times better in comparison to steel high dimension stability due to Yttrium-Stabilisation thermal expansion coefficient α= 9,4 * 10 6 °K 1 traceable calibration certificate (laboratory accredited to DIN EN ISO/IEC 17025) included in delivery