MARGETTS, George. Margetts's Longitude Tables for correcting the Effect of Parallax and Refraction. London: for the author, [1794?]. 285 x 235mm., engraved throughout, 12 pages of printed introduction. Contemporary red straight-grained morocco, spine gilt (scuffed at extremities), gilt edges. -- MUDGE, Thomas, Jr. A Description with plates of the Time-keeper invented by the late Mr. Thomas Mudge. London: for the author, 1799. 285 x 222mm., engraved portrait and 9 folding engraved plates. (Slightly browned, a few tears.) Modern half calf. -- REID, Thomas. Treatise on Clock and Watch Making, theoretical and practical. Edinburgh: 1826. 242 x 152mm., 20 folding engraved plates (4 loose). (Slightly soiled, a few tears.) Contemporary half morocco (slightly rubbed). -- And another (The Nautical Almanac ... for the year 1770). (4)