The only testing center based on the German chronometer norm is located on the premises of the restored former observatory in Glashütte. Here Wempe works together with the State Authorities of Metrology and Verification of the federal states of Thuringia and Saxony. Today, approximately 60 years after its first involvement with Glashütte, Wempe is helping to ensure that this town remains a synonym for outstanding German watchmaking and that the observatory has finally regained its place of honor.
The testing process
The stringent criteria of DIN 8319 that are used by the two State Authorities require a 15-day test procedure. In the five positions “crown left,” “crown on top,” “crown below,” “dial on top,” and “dial below,” the average daily rate variation of the watch must lie between -4 and +6 seconds.
The average daily rate deviation may not exceed two seconds, and the largest rate deviation may not exceed five seconds. All of the watches are tested at temperatures of 23°C, 8°C, and 38°C and at a humidity of approximately 50%.
Wempe Glashütte I/SA Chronometerwerke und Zeitmeister