1/ Some Chronometers had crosshair and not crosshair dials: Geophysic / Constellation, for example, while both being chronometers. So, what is the purpose of the Crosshair?
2/ The era during the appearance of crosshair dials is quite reduced: End Fifties / End Sixties? So, why not before and after?
Tough question....
Best, my friend.
Nicolas

I think for marine or astronomy, this has been an explanation. I never saw something factual about watches.
Damn!
Thanks for your help, Stephan,
Nicolas

At least this is the most " cartesian " one. Except if we are missing something.
Un abrazo, Amigo!
Nicolas
Such as the Tru Beat, for example, why, if this is the meaning of this " distinction ", the GMT Master never received one, while it was announced as a compass Watch?
The Tru Beat and the GMT Master were, for a while, contemporary....
Best,
Nicolas
I recensed: Omega, Rolex, JLC ( on at least three of their watches! ), Tissot, UG, GP, Longines and Seiko. There must be others!
The strange thing is that the crosshair dial was used, most of all, during what, 10 years?
Best,
Nicolas

But it can make you think about that, for sure!
Best,
Nicolas
Congrats, my friend. You should be the JLC Moderator, as a true JLC fan you are!
Best,
Nicolas