This standard specifies the marks and definitions of inspection positions for timing instruments. This standard applies to the inspection position markings of analog timing instruments, and also applies to the inspection position markings of movements and timing instruments without conventional dials. The markings and definitions specified in this standard are independent of the type, construction or size of the timekeeping instrument.
GB/T 4028-1994 history
2013GB/T 4028-2013 Symbolization of control positions for timekeeping instruments
1994GB/T 4028-1994 Timekeeping instruments-Symbolization of control positions