Tolerances
Glass balls can be produced from different standards. The most common standards are the following
– DIN 5401 standard (the German standardization system)
– ANSI/ABMA standard (the American standardization system)
– ISO 3290 standard (the European standardization system)
No matter what standard is used, the essential control points are the same because all standards have equivalences.
Standard DIN 5401 (PDF)
Standard ANSI/ABMA (PDF)
Standard ISO 3290 (PDF)