Pego literal lo que tiene que pasar un cuarzo para denominarse cronometro:
Nevertheless, COSC has managed to modernize the test for quartz chronometers. The old test gave chronometer certification to watches that came free with the breakfast flakes, and COSC wanted to give the latest thermo-compensated quartz movements the same status as mechanical chronometers. The new 20-day environmental test for the certification of quartz-crystal chronometers subjects the cased-up watches to a total of 7800 100G shocks from six directions, continuously changing positions, magnetic fields, extreme temperature and humidity, and expects them to keep time within 7/100ths of a second a day.
creo que es interesante echar una ojeada.
Hombre una cosa es que un cuarzo sea preciso y otra cosa es que un cuarzo pase estas pruebas y tenga una precision de 0.07 seg/dia, o multiplicando por 365, nos da 25.55 seg/año, para tener una referencia.
Un abrazo.
Nota: si algun voluntario traduce la paguina, podria estar en esenciales.
Nevertheless, COSC has managed to modernize the test for quartz chronometers. The old test gave chronometer certification to watches that came free with the breakfast flakes, and COSC wanted to give the latest thermo-compensated quartz movements the same status as mechanical chronometers. The new 20-day environmental test for the certification of quartz-crystal chronometers subjects the cased-up watches to a total of 7800 100G shocks from six directions, continuously changing positions, magnetic fields, extreme temperature and humidity, and expects them to keep time within 7/100ths of a second a day.

creo que es interesante echar una ojeada.
Hombre una cosa es que un cuarzo sea preciso y otra cosa es que un cuarzo pase estas pruebas y tenga una precision de 0.07 seg/dia, o multiplicando por 365, nos da 25.55 seg/año, para tener una referencia.
Un abrazo.
Nota: si algun voluntario traduce la paguina, podria estar en esenciales.