Version :
All gauge blocks are marked with an individual identification number. Size 0.5 to 10 − cross-section = 30×9 mm. Size 11 to 500 − cross-section = 35×9 mm. Of special alloy steel, carefully hardened and stress-relieved. Tolerance class 0 as a master standard to check workshop gauges. For setting gauges to very high accuracies. Including traceable test certificate.

Note :
Other nominal dimensions available on request.