- 著者
-
原 辰男
- 出版者
- 一般社団法人 日本時計学会
- 雑誌
- マイクロメカトロニクス (ISSN:13438565)
- 巻号頁・発行日
- vol.45, no.3, pp.1-9, 2001-09-12 (Released:2017-11-09)
- 被引用文献数
-
1
SPRING DRIVE Cal.7R the world was heralded, and it was commercialized in December, 1999. Cal.7R is electron speed control style mechanical watch which raised the time accuracy taking the mainspring as a power by electronic speed control. ^<1)>We report necessary winding-up lock mechanism and stopping hand movement mechanism in Cal.7R development.