Metallic materials - Rockwell hardness test - Part 1: Test method (scales A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-1:2005); German version EN ISO 6508-1:2005— 35 стр.
Geometrical product specifications (GPS) - Drawing indications for moulded parts in technical product documentation (TPD) (ISO 10135:2007); German version EN ISO 10135:2009— 65 стр.
Heat treatment of ferrous materials - Light-microscopical determination of the depth and porosity of the compound layer of nitrided and nitro-carburized ferrous parts— 19 стр.