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…a larger diameter rotor harvests more energy per spin. Micro rotors may spin as fast, but they aren’t developing the same amount of torque as the same metal casted into a 3/4 or full rotor

...has big white numerals, generaly 'light' enough to balance the indices. Especially the laer 2 digit dates. The 1st of the month is a bit lightweight, but one can't have everything. If the Moser date window were to be framed, the indices would need to become visually heavier to match. That balance

Collector @ArkJasdain shared photos of the Piaget regulation box to me, see at bottom. He also said on Reddit: QUOTE Yes, the original iterations of the 7P movement did indeed have the capability to have the rate reprogrammed with a wireless induction type signal. The memory in the first versions of

Is how I approach date indication. >> date is a choice that once taken has to be legible and maintain the cohesion of the whole watch Legible: There’s no point to a date that’s hard to read unless the inclusion was cynical in the first place ie simply to sell the watch or simply because the movement

Thanks for sharing

I didn’t realize the extent to which you had collected quartz. Even the gen 3 VHP (very high precision). I have sent you a DM.

..but these 3 will always be public

..I quite like the watch But with that price I am not going to buy it. Which is the _other_ thing I am training myself. You can admire from afar. 😂

Submitting three long-form articles of mine tracing the first era of quartz timekeeping, which ran from 1927 to around 1975: The defining feature of this first era was that, like balance wheel and tuning fork chronometry before it, the rate precision was entirely a question of the frequency precisio

I cleaned up or noted some typographical errors, including one within a cited source 😅 And if I am shown to be wrong on the Beta 4 - 7P connection, things get even more interesting because then there is a completely unknown Piaget quartz caliber lurking about