Guides for for Bentley Barnato from Breitling
Part of the instruction manual for the Breitling for Bentley Barnato in English:
t he certification test for wristwatches with sprung balance oscillators, according to the ISO 3159 norm, consists of observing each movement for 15 days and 15 nights, in 5 positions and at 3 different temperatures (8°, 23°C, 38°C). In order to earn the prestigious chronometer label, a movement’s performances must meet 7 very strict criteria, including a daily variation in rate ranging between only –4/+6 seconds. t he term “chronometer” should not be confused with that of “chronograph”....
Manufacturer: Breitling
Model: for Bentley Barnato
Size of the instruction manual: 6.49 MB
Category: Miscellaneous
Model: for Bentley Barnato
Size of the instruction manual: 6.49 MB
Category: Miscellaneous
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