Metallic materials - Rockwell hardness test - Part 3: Calibration of reference blocks (scales A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-3:2005); German version EN ISO 6508-3:2005— 19 стр.
Tractors and machinery for agriculture and forestry - Guards for power take-off (PTO) drive shafts - Strength and wear tests and acceptance criteria (ISO 5674:2004); German version EN ISO 5674:2004— 32 стр.