Subtensial plain trigonometry : wrought with a sliding-rule, with Gunter's lines: and also arithmetically, in a very concise manner. And this method apply'd to navigation, and surveying. To which is added, I. Mensuration of masons work. II. A solution of rota, or Aristotle' wheel. III. A brief discourse upon gravity. By Thomas Abel, of Bourn in Lincolnshire, Old England. - Abel, Thomas. (Printed and sold for the author, by Andrew Steuart, 1761)