This standard specifies the names of perpetual calendar and spring mechanism components of complex mechanical watch movements. This standard is applicable to complex mechanical watch (hereinafter referred to as "mechanical watch") movement with perpetual calendar and spring function.
GB/T 36434-2018 Referenced Document
GB/T 6877 "Classification, terminology and numbering for parts and assemblies of the time measuring instruments —Mechanical wrist watch movements"
GB/T 9820.2 Horological vocabulary.Part2:Technical and commercial definitions
GB/T 36434-2018 history
2018GB/T 36434-2018 Complex mechanical watch movements—Terminology for parts and assemblies of perpetual calendar and repeater mechanism