ISO 3378
Leather - Physical and mechanical tests - Determination of resistance to grain cracking and grain crack index
Leder - Physikalische und mechanische Prüfungen - Bestimmung des Widerstandes gegen Narbenplatzen und des Narbenbruchindex (ISO 3378:2001)
Responsible national committee
NA 062-05-51 AA - Requirements and physical test methods of leather and ....
Responsible international committee
IULTCS - International Union of Leather Technologists and Chemists Societies