This section specifies the defect terminology and test methods for round inorganic and sapphire watch glasses based on basic physical and aesthetic requirements.
QB/T 2813.3-2010 Referenced Document
ISO 286-1 Geometrical product specifications (GPS) - ISO code system for tolerances on linear sizes - Part 1: Basis of tolerances, deviations and fits; Technical Corrigendum 1*, 2013-08-01 Update
ISO 286-2 Geometrical product specifications (GPS) - ISO code system for tolerances on linear sizes - Part 2: Tables of standard tolerance classes and limit deviations for holes and shafts; Technical Corrigendum 1*, 2013-08-01 Update
QB/T 2813.1-2006 Mineral and sapphire watch-glasses Part 1: Dimensions and tolerances
QB/T 2813.3-2010 history
2010QB/T 2813.3-2010 Mineral and sapphire watch-glasses.Part 3:Qualitative criteria and test methods