Precision clock manufacturer
Clemens Riefler
Also recorded as: Riefler · Sigmund Riefler
Munich firm whose precision regulators served observatories worldwide from the 1890s.
Clemens Riefler founded a workshop for mathematical drawing instruments in 1841. His son Sigmund Riefler patented a new escapement in 1889, in which impulse is given through the pendulum's suspension spring, and the firm built astronomical regulators — often in sealed, partly evacuated cases — that were the world standard until the Shortt free pendulum.
- Country
- Germany
- City / centre
- Nesselwang; Munich
- Founded
- 1841
- Status
- Historical firm
- Key people
- Clemens Riefler; Sigmund Riefler (1847–1912)
Innovations & specialities
- Riefler escapement (1889)
- Invar and nickel-steel pendulums
- Vacuum-tank regulators
Works by Clemens Riefler in the catalogue
Open in the catalogue →
Clocks · 1890
Regulator clock by Clemens Riefler, Germany, 1890
German Clock Museum
Clocks · 1920
Regulator clock by Clemens Riefler, Germany, 1920
German Clock Museum
Clocks · 1920
Regulator clock by Ludwig Siebenpfeiffer, Germany, 1920
German Clock Museum
Clocks · 1933
Regulator clock by Clemens Riefler, Germany, 1933
German Clock Museum
Clocks · 1935
Regulator clock by Clemens Riefler, Germany, 1935
German Clock Museum
Linked through the Atlas maker authority list, which reconciles the spellings used by different institutions. Attributions are as stated by each holding institution or auction house.
