The titlepage is engraved. Variant imprint: "Welles & Grosvenor". The text consists mostly of logarithmic tables. With a final advertisement leaf. Vertical chain lines. Reproduction of original from the British Library. Available online to authorized PSU users as part of the Medicine, science, and technology series of Eighteenth century collections online.
Electronic reproduction. Farmington Hills, Mich. : Thomson Gale, 2003. Available via the World Wide Web. Access limited by licensing agreements