The description and use of a joynt-rule : fitted with lines for the finding the hour of the day and azimuth of the sun, to any particular latitude, or, to apply the same generally to any latitude : together with all the uses of Gunters quadrant applyed thereunto ... / - Brown, John, (Printed by T.J. for J. Brown and H. Sutton, and sold at their houses,, 1661)