Jost Bürgi Library Search for 'su:"Quartz" and au:Riefler, Sigmund'

The time-service system at the provisional observatory of the German Museum in Munich /

By Riefler, Sigmund, | Riefler, S..
Munich : C. Wolf and Son, printers, 1911 .
5 pages, [1] folded leaf of plates : , Cover title. | "Second supplement to the treatise Präzisions-Pendeluhren und Zeitdienstanlagen für Sternwarten. Von Dr. S. Riefler ... 1907." 28 cm.

The working of astronomical time-service systems by means of accumulators with incandescent lamp rheostat /

By Riefler, Sigmund, | Riefler, S..
Munich : C. Wolf and Son, printers, 1911 .
7 pages : , Cover title. | "First supplement to the treatise Präzisions-Pendeluhren und Zeitdienstanlagen für Sternwarten. Von Dr. S. Riefler ... 1907." 28 cm.