
Timekeeping instruments - Wrist-chronometers with spring balance oscillator
出版:International Organization for Standardization

專家解讀視頻
NFS 81 516:1996 - Equivalent
DIN 8319-1 (1980-10) - Identical
SN ISO 3159:1997 - Identical
KS B ISO 3159:2013 - Identical
KS B ISO 3159:2008 - Identical