Stengel, Johann Peterson. Sundials. "Gnomonica Universalis, Oder Ausführliche Beschreibung Der Sonnen-Uhren". Augsburg: J. Weh, 1675. 1st edition. 12mo. Engraved frontispiece, (9), 360 pp., 104 copperplates. O. parchment binding from the time.
Stengel, Johann Peterson."Gnomonica Universalis, sive Praxis Amplissima Geometrice describendi Horologia Solaria, tum Stabilia, juxta omnes species, ... tum Reflexa & Portatilia in figuris ... expressa". Ulm: Danielis Bartholomaeus, 1706. 8vo....