According Boundary book of BADER supplier from incoming section revision Dec'2010 that show limit sample of open scar defect all of 3 ZONE are ZONE A , ZONE B & ZONE C but only ZONE A has identify dimension limit 2 mm of defect ,for others ZONE did not identify any detail so we do measure on the leather limit sample that attached in book. Pls see detail in attached file . Krub