Astronomy / Astrolabe(instrument used for locating the positions of luminaries; determining local time; surveying and triangulation).- Depiction and description of an astrolabe after al-Biruni.- Drawing;Persian; 18th century. Illustration to: Kitab al-tafhim li-avail sinaat al- tanjum (introduction to the basics of astrology) by the Persian scholar al-Biruni(Abu al-Rayhan Muhammad ibn Ahmad al-Biruni); 973-1048.On paper.Ms. 6565.Teheran; Parlamentsbibliothek.