Vai lá: Patek Philippe Observatory Chronometer "Extra"
Besides functioning as a showcase for the manufacture's design, skill and tenacity, an Observatory watch conveys that unique charm of knowing its rarity, of having been assembled, finished and regulated by a master watchmaker, and of being proven in rigorous testing by independent experts. The present watch has a movement which was submitted for trial at the Observaory in Geneva, receiving its certificate in 1914. An official copy is posted below, but from my rudimentary French I have read the following results:
-- This class receiving certification consisted of 93 pieces with scores ranging from 606 to 879 (out of a possible 1000), and this movement achieved 626 points, considered as Honorable Mention
-- Measurements were taken for 46 consecutive days, beginning near the end of 1913
-- Positional error ranged from -0.20 seconds to +1.42 seconds per day, with average deviation from the mean of 0.41 seconds
-- Temperature compensation error averaged 0.037 seconds per degree centigrade
-- The average daily rate was +0.29 seconds, and the maximum deviation in daily rate between any two testing periods was 1.62 seconds
Much more has so far escaped my understanding, but this certainly suggests very, very good timekeeping, especially given the technological and manufacturing realities of the era.
Fonte:
http://ninanet.net/watches/others13/Mediums/mpatekpw.htmlfotos do bicho:
Se me permite, Mich, eu editei a foto que estava demasiadamente grande.
Abraços!
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