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MATHEMATICAL INSTRUMENTS.
Rare Book Dept,
*E.197 075
 
Leybourn, William, 1626-17007
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 8S. 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