Rare Books

Horologiographia: or, The art of dyalling, : being the second book of the use of the trianguler-quadrant. Shewing the natural, artificial, and instrumental way, of making of sun-dials, on any flat superficies: with plain and easie directions, to discover their nature and affections, by the horizontal projection. With the way of drawing the usual ornaments on any plain: also, a familiar easie way to draw those lines on the ceiling of a room, by the trianguler quadrant. Also, the use of the same instrument in navigation; both for observation, and operation. Performing the use of several sea-instruments still in use