THE PENDEND IMPROVED SHIP LOG three dials 0-1, 1-10, 10-100 nautical mile with rectangular swivel cover - 13in(33cm)long;and a compass adjuster's deflecting instrument signed J.White Glasgow Sir W.Thomson's Patent No.167 with two deflecting magnets in mahogany carrying case - 7½in.(19cm)long (2)" /> A stirrup-mounted brass cased ship's trailing log, the in-line white enamel dial inscribed "<I>THE PENDEND IMPROVED SHIP LOG</I> three dials 0-1, 1-10, 10-100 nautical mile with rectangular swivel cover - 13in(33cm)long;and a compass adjuster's deflecting instrument signed <I>J.White Glasgow Sir W.Thomson's Patent No.167</I> with two deflecting magnets in mahogany carrying case - 7½in.(19cm)long (2) | Christie's