Evronot. Early book on astronomy to establish the Jewish calendar, times of moladot and tekufot, by Rabbi Eliezer Balin, with supplements. Title page illustrated with a picture of Moshe and Aharon, and with a sketch of the solar system and the zodiac. Many tables are printed in the book, including: two sketches of a hand with captions for the purpose of astronomic calculations and four systems of wheels spinning on their axes, for calculating the movements of celestial bodies. Complete copy with all the sketches and wheels. [2], 40 leaves, 19 cm. Many rabbinic signatures and notations from the time of printing. There is an ancient, thick paper, unknown, with 22 astronomic sketches, 27×28 cm, included in this lot. Fine-very fine condition. Aging stains. Slight restoration to the title page with tiny blemish. New binding.