Astronomy Welper, E Neu-vermehrte Welperische Gnomonica oder gründlicher Unterricht und Beschreibung, wie man alle Sonnen-Uhren auf ebenen Orten leichtlich aufissen ... cylindrical clocks, sun rings, mirror-quadrantal and universal clocks, night-moon and star clocks etc. are to be skilfully made. Published for the third time and supplemented with the fourth part. With engraved frontispiece. With engraved frontispiece, a double-page map and 34 copper plates. Nuremberg, Chr. Weigel, 1708. 4 vols. 200 p., 38 pp. Fol. Pgt. d. (somewhat stained, cover with defects). Poggendorff II, 1293 - Zinner, Astronom. Instr., 853 - Edition of the well-known Welper work, edited by Doppelmayr and augmented by the 4th part. The appendix contains the description and calculation of mechanical clocks, numerous gear calculations, a section on pendulums and instructions on the use of equation tables. - The plates with numerous astronomical figures and the folded map of the world. World map. - Frontispiece mounted on Japan, rubbed and with slight losses. First 8 vols. mounted on transparent Japan. Somewhat browned and stained, somewhat stronger at the beginning. One plate with marginal tear. The plates with strong impressions. With engraved frontispiece, engraved map and 34 copper engravings with numerous astronomical figures. Cont. vellum (spotted, front cover with larger defects). - 3rd edition. - Frontispice mounted on Japan, rubbed and with small missing parts. First 8 fols. mounted on transparent Japan. Slightly browned and stained, somewhat stronger at the beginning. One plate with marginal tear. The plates with strong impressions. This lot is taxed. A surcharge of 24.95% will be added to the hammer price and 7% (books, art) or 19% VAT (manuscripts, silkscreens, offset prints, photographs) to the final invoice amount in the European Union. This work is subject to the regular margin scheme. There is a 24.95% buyer's premium on the hammer price and 7% (Books and Art) or 19% VAT (Manuscripts, Screenprints, Offsetprints and Photographs) on the final invoice amount in the European Union.