Quite a lot of Tissots used to tell you to use a particular "key" to open them.
The Omga 1250 tuning fork actually went one better on tools - rather than telling you what to use it included the gauge for setting the index pallets in a little compartment inside the movement :grin:
The Omga 1250 tuning fork actually went one better on tools - rather than telling you what to use it included the gauge for setting the index pallets in a little compartment inside the movement :grin: