SATRA STD 174 Break/pipiness scale

This is a widely-used reference scale for measuring the wrinkling of the grain of leather or the top surface of a synthetic material when folded inwards to a standard curvature.

It consists of a graded selection of replicas of leather numbered one to eight with different amounts of pipiness and a mandrel for bending the sample to the same radius as the scale.

By using the numbered scale, a more objective evaluation can be made of the pipiness of a material.