Teddy Zhang
📍 Shanghai City
《A Practical and Theoretical Treatise on the Detached Lever Escapement for Watches and Time Piece》
《A Portion of the Papers Relating to the Great Clock for the New Palace at Westminster, with Remarks》
《A New System of Electric Clocks》(1886)
《A New Method of Constructing Sun-Dials》(1767)
《A History of Simon Willard, Inventor and Clockmaker》(1911)
《A Description of a Clepsydra or Water-Clock》(1753)
《A Catalogue of Books, Manuscripts, Specimens of Clocks, Watches, Watchwork, Paintings, Printings, &c》
《手表问答三百题》
《20th Century Catalogue of Supplies for Watchmakers, Jewelers》
《手表零件材料及热处理》
