—_—eé — The art of dialling.
Rare Book Dans,
*E.197 Leybourn, William, 1626-1700?
075 The art of dialling, performed geometrically, by scale and compasses: arithmetically, by the canons of sines and tangents: instrumentally, by a trigonal instrument, accommodated with lines for that purpose: the geometrical part whereof is per- formed by projecting of the sphere in plano, upon the plain itself, whereby not onely the making, but the reason also of dials is discovered. By William Leybourn ..._ London, Printed by S. G. and B. G. for B. Tooke and T. Sawbridge, 1669.
4p. 1,175 p. front. (port.) diagrs. (1 fold.) 20x 153™. 1. Sun-dials. 2. Mathematical instruments. 1. Title.
& 26-18567 Library of Congress QB215.L65