GB/T 6877-2008 Classification, terminology and numbering for parts and assemblies of the time measuring instruments.Classification, terminology and numbering for parts and assemblies of mechanical wrist watch movements (English Version)
This standard specifies the classification, name and serial number of mechanical watch movement components. This standard applies to mechanical watch movements with different structures and functions.
GB/T 6877-2008 history
2008GB/T 6877-2008 Classification, terminology and numbering for parts and assemblies of the time measuring instruments.Classification, terminology and numbering for parts and assemblies of mechanical wrist watch movements
1986GB/T 6877-1986 Classification,terminology and numbering for parts and assemblies of the mechanical time measuring instruments--Classification,terminology and numbering for parts and assemblies of wrist watches and lever escapemen