音叉錶 tuning fork

[@horosophia]

修正: 當年 Bulova turning fork 震頻 是每秒 360Hz

[@chulong7713]

中意六十年代的Spaceview，不過都好難搵到原裝。

[@alfredlau533]

Thank you for the in depth lesson.
Any current brand which still produces tuning fork watches?

[@horosophia]

Bulova only, i guess

[@kmak79hkable]

以前有隻26200hz

[@burtonlee706]

Tuning fork is the correct spelling