Noro.
0,13 s v povprečju na dan in 47,5 sekund na leto! To je dosegel Jaegrov Master Tourbillon !
Še strožji test od COSC je nov Patek Philippe Seal (standard ki ga uvaja PP). Za razliko od COSC kronometra se poleg mehanizma ocenjuje tudi kakovost ure same.
Vir:
www.patek.com/patek-philippe.html?pageId...kgroundId=8&lang=en&
The stability of the rate of Patek Philippe timepieces is checked in several phases during the manufacturing process, initially with uncased movements, later with finished watches. The final rate accuracy measurement of the cased watch is performed with kinetic simulators and must comply with the following in-house precision standards:
for calibers with diameters of 20 mm or more, the rate accuracy must lie within the range of -3 and +2 seconds per 24 hours.
for calibers with diameters of less than 20 mm, the rate accuracy must lie within the range of -5 and +4 seconds per 24 hours.
Patek Philippe watches with tourbillon are subject to the same in-process inspections as all other mechancial timepieces, but they must comply with tighter tolerances as follows:
Their rate accuracy as measured during the final inspection with kinetic simulators must lie within the range of -2 and +1 seconds per 24 hours.
The greatest deviation between the average rate of the watch in all six measuring positions and the rate in each position must not exceed 4 seconds per 24 hours.
In COSC:
Vir:
www.cosc.ch/popmecaniquetableau.php?lang=en