This part of ISO 3377 specifies a method for determining the tear strength of leather using a single edged tear. The method is sometimes described as a trouser tear. It is applicable to all types of leather.
ISO 3377-1:2002 history
2011ISO 3377-1:2011 Leather - Physical and mechanical tests - Determination of tear load - Part 1: Single edge tear
2002ISO 3377-1:2002 Leather - Physical and mechanical tests; Determination of tear load - Part 1: Single edge tear