Wristwatch Sundial

Would even my wristwatch work at the North Pole?

.. and sundials are not much good would they … "Hey Joe (?) .. What time does it say … "June" Then, the magnetic field would not affect my watch at all?

NO, or perhaps "Oh yes, just go there and then check back and tell us the results of your fascinating question.

手作り時計の JHA

The Mastery of Time: A History of Timekeeping, from the Sundial to the Wristwatch: Discoveries, Inventions, and Advances in Master Watchmaking $71.47 …