引き打ちウォッチの開発
Development of Analog Quartz Watch with Minute Repeater

Takashi OSA, Tomio OKIGAMI, Kiyotaka IGARASHI
1992 Journal of the Horological Institute of Japan  
doi:10.20805/tokeieafj.141.0_13 fatcat:lnrlwpjtdjheloaq3wnj5ueoxi